diff --git a/Marlin/ConfigurationStore.cpp b/Marlin/ConfigurationStore.cpp
index 3872b505d..b1da94a30 100644
--- a/Marlin/ConfigurationStore.cpp
+++ b/Marlin/ConfigurationStore.cpp
@@ -263,8 +263,6 @@ void Config_StoreSettings()  {
     EEPROM_WRITE_VAR(i, dummy);
   }
 
-  int storageSize = i;
-
   char ver2[4] = EEPROM_VERSION;
   int j = EEPROM_OFFSET;
   EEPROM_WRITE_VAR(j, ver2); // validate data
@@ -446,7 +444,7 @@ void Config_ResetDefault() {
   float tmp1[] = DEFAULT_AXIS_STEPS_PER_UNIT;
   float tmp2[] = DEFAULT_MAX_FEEDRATE;
   long tmp3[] = DEFAULT_MAX_ACCELERATION;
-  for (int i = 0; i < NUM_AXIS; i++) {
+  for (uint16_t i = 0; i < NUM_AXIS; i++) {
     axis_steps_per_unit[i] = tmp1[i];
     max_feedrate[i] = tmp2[i];
     max_acceleration_units_per_sq_second[i] = tmp3[i];
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 708333883..204226eeb 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -937,19 +937,22 @@ void get_command()
 
 }
 
-
-float code_value()
-{
-  return (strtod(strchr_pointer + 1, NULL));
+float code_value() {
+  float ret;
+  char *e = strchr(strchr_pointer, 'E');
+  if (e) {
+    *e = 0;
+    ret = strtod(strchr_pointer+1, NULL);
+    *e = 'E';
+  }
+  else
+    ret = strtod(strchr_pointer+1, NULL);
+  return ret;
 }
 
-long code_value_long()
-{
-  return (strtol(strchr_pointer + 1, NULL, 10));
-}
+long code_value_long() { return (strtol(strchr_pointer + 1, NULL, 10)); }
 
-bool code_seen(char code)
-{
+bool code_seen(char code) {
   strchr_pointer = strchr(cmdbuffer[bufindr], code);
   return (strchr_pointer != NULL);  //Return True if a character was found
 }
@@ -1008,76 +1011,70 @@ XYZ_CONSTS_FROM_CONFIG(signed char, home_dir,  HOME_DIR);
 #endif //DUAL_X_CARRIAGE
 
 static void axis_is_at_home(int axis) {
-#ifdef DUAL_X_CARRIAGE
-  if (axis == X_AXIS) {
-    if (active_extruder != 0) {
-      current_position[X_AXIS] = x_home_pos(active_extruder);
-      min_pos[X_AXIS] =          X2_MIN_POS;
-      max_pos[X_AXIS] =          max(extruder_offset[X_AXIS][1], X2_MAX_POS);
-      return;
-    }
-    else if (dual_x_carriage_mode == DXC_DUPLICATION_MODE && active_extruder == 0) {
-      current_position[X_AXIS] = base_home_pos(X_AXIS) + home_offset[X_AXIS];
-      min_pos[X_AXIS] =          base_min_pos(X_AXIS) + home_offset[X_AXIS];
-      max_pos[X_AXIS] =          min(base_max_pos(X_AXIS) + home_offset[X_AXIS],
-                                  max(extruder_offset[X_AXIS][1], X2_MAX_POS) - duplicate_extruder_x_offset);
-      return;
+
+  #ifdef DUAL_X_CARRIAGE
+    if (axis == X_AXIS) {
+      if (active_extruder != 0) {
+        current_position[X_AXIS] = x_home_pos(active_extruder);
+        min_pos[X_AXIS] = X2_MIN_POS;
+        max_pos[X_AXIS] = max(extruder_offset[X_AXIS][1], X2_MAX_POS);
+        return;
+      }
+      else if (dual_x_carriage_mode == DXC_DUPLICATION_MODE) {
+        current_position[X_AXIS] = base_home_pos(X_AXIS) + home_offset[X_AXIS];
+        min_pos[X_AXIS] = base_min_pos(X_AXIS) + home_offset[X_AXIS];
+        max_pos[X_AXIS] = min(base_max_pos(X_AXIS) + home_offset[X_AXIS],
+                                max(extruder_offset[X_AXIS][1], X2_MAX_POS) - duplicate_extruder_x_offset);
+        return;
+      }
     }
-  }
-#endif
-#ifdef SCARA
-   float homeposition[3];
-   char i;
-   
-   if (axis < 2)
-   {
+  #endif
+
+  #ifdef SCARA
+    float homeposition[3];
    
-     for (i=0; i<3; i++)
-     {
-        homeposition[i] = base_home_pos(i); 
-     }  
-  // SERIAL_ECHOPGM("homeposition[x]= "); SERIAL_ECHO(homeposition[0]);
-   //  SERIAL_ECHOPGM("homeposition[y]= "); SERIAL_ECHOLN(homeposition[1]);
-   // Works out real Homeposition angles using inverse kinematics, 
-   // and calculates homing offset using forward kinematics
-     calculate_delta(homeposition);
+    if (axis < 2) {
+
+      for (int i = 0; i < 3; i++) homeposition[i] = base_home_pos(i);
+
+      // SERIAL_ECHOPGM("homeposition[x]= "); SERIAL_ECHO(homeposition[0]);
+      // SERIAL_ECHOPGM("homeposition[y]= "); SERIAL_ECHOLN(homeposition[1]);
+      // Works out real Homeposition angles using inverse kinematics, 
+      // and calculates homing offset using forward kinematics
+      calculate_delta(homeposition);
      
-    // SERIAL_ECHOPGM("base Theta= "); SERIAL_ECHO(delta[X_AXIS]);
-    // SERIAL_ECHOPGM(" base Psi+Theta="); SERIAL_ECHOLN(delta[Y_AXIS]);
+      // SERIAL_ECHOPGM("base Theta= "); SERIAL_ECHO(delta[X_AXIS]);
+      // SERIAL_ECHOPGM(" base Psi+Theta="); SERIAL_ECHOLN(delta[Y_AXIS]);
      
-     for (i=0; i<2; i++)
-     {
-        delta[i] -= home_offset[i];
-     } 
+      for (int i = 0; i < 2; i++) delta[i] -= home_offset[i];
      
-    // SERIAL_ECHOPGM("addhome X="); SERIAL_ECHO(home_offset[X_AXIS]);
-  // SERIAL_ECHOPGM(" addhome Y="); SERIAL_ECHO(home_offset[Y_AXIS]);
-    // SERIAL_ECHOPGM(" addhome Theta="); SERIAL_ECHO(delta[X_AXIS]);
-    // SERIAL_ECHOPGM(" addhome Psi+Theta="); SERIAL_ECHOLN(delta[Y_AXIS]);
+      // SERIAL_ECHOPGM("addhome X="); SERIAL_ECHO(home_offset[X_AXIS]);
+      // SERIAL_ECHOPGM(" addhome Y="); SERIAL_ECHO(home_offset[Y_AXIS]);
+      // SERIAL_ECHOPGM(" addhome Theta="); SERIAL_ECHO(delta[X_AXIS]);
+      // SERIAL_ECHOPGM(" addhome Psi+Theta="); SERIAL_ECHOLN(delta[Y_AXIS]);
       
-     calculate_SCARA_forward_Transform(delta);
+      calculate_SCARA_forward_Transform(delta);
      
-    // SERIAL_ECHOPGM("Delta X="); SERIAL_ECHO(delta[X_AXIS]);
-    // SERIAL_ECHOPGM(" Delta Y="); SERIAL_ECHOLN(delta[Y_AXIS]);
+      // SERIAL_ECHOPGM("Delta X="); SERIAL_ECHO(delta[X_AXIS]);
+      // SERIAL_ECHOPGM(" Delta Y="); SERIAL_ECHOLN(delta[Y_AXIS]);
      
-    current_position[axis] = delta[axis];
+      current_position[axis] = delta[axis];
     
-    // SCARA home positions are based on configuration since the actual limits are determined by the 
-    // inverse kinematic transform.
-    min_pos[axis] =          base_min_pos(axis); // + (delta[axis] - base_home_pos(axis));
-    max_pos[axis] =          base_max_pos(axis); // + (delta[axis] - base_home_pos(axis));
-   } 
-   else
-   {
+      // SCARA home positions are based on configuration since the actual limits are determined by the 
+      // inverse kinematic transform.
+      min_pos[axis] = base_min_pos(axis); // + (delta[axis] - base_home_pos(axis));
+      max_pos[axis] = base_max_pos(axis); // + (delta[axis] - base_home_pos(axis));
+    } 
+    else {
       current_position[axis] = base_home_pos(axis) + home_offset[axis];
-      min_pos[axis] =          base_min_pos(axis) + home_offset[axis];
-      max_pos[axis] =          base_max_pos(axis) + home_offset[axis];
-   }
-#else
-  current_position[axis] = base_home_pos(axis) + home_offset[axis];
-  min_pos[axis] =          base_min_pos(axis) + home_offset[axis];
-  max_pos[axis] =          base_max_pos(axis) + home_offset[axis];
-#endif
+      min_pos[axis] = base_min_pos(axis) + home_offset[axis];
+      max_pos[axis] = base_max_pos(axis) + home_offset[axis];
+    }
+  #else
+    current_position[axis] = base_home_pos(axis) + home_offset[axis];
+    min_pos[axis] = base_min_pos(axis) + home_offset[axis];
+    max_pos[axis] = base_max_pos(axis) + home_offset[axis];
+  #endif
 }
 
 #ifdef ENABLE_AUTO_BED_LEVELING
diff --git a/Marlin/configurator/config/language.h b/Marlin/configurator/config/language.h
index a1c47133f..f1193b924 100644
--- a/Marlin/configurator/config/language.h
+++ b/Marlin/configurator/config/language.h
@@ -34,7 +34,6 @@
 #endif
 
 #define PROTOCOL_VERSION "1.0"
-#define FIRMWARE_URL "https://github.com/MarlinFirmware/Marlin"
 
 #if MB(ULTIMAKER)|| MB(ULTIMAKER_OLD)|| MB(ULTIMAIN_2)
   #define MACHINE_NAME "Ultimaker"
@@ -59,6 +58,7 @@
   #define FIRMWARE_URL "http://www.bq.com/gb/downloads-prusa-i3-hephestos.html"
 #else // Default firmware set to Mendel
   #define MACHINE_NAME "Mendel"
+  #define FIRMWARE_URL "https://github.com/MarlinFirmware/Marlin"
 #endif
 
 #ifdef CUSTOM_MENDEL_NAME
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 452f8edeb..0a1833c75 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -275,13 +275,9 @@
 
 #ifdef ADVANCE
   #define EXTRUDER_ADVANCE_K .0
-
   #define D_FILAMENT 1.75
   #define STEPS_MM_E 1000
-  #define EXTRUSION_AREA (0.25 * D_FILAMENT * D_FILAMENT * 3.14159)
-  #define STEPS_PER_CUBIC_MM_E (axis_steps_per_unit[E_AXIS]/ EXTRUSION_AREA)
-
-#endif // ADVANCE
+#endif
 
 // Arc interpretation settings:
 #define MM_PER_ARC_SEGMENT 1
diff --git a/Marlin/language.h b/Marlin/language.h
index 89e45d8e6..10ef445d8 100644
--- a/Marlin/language.h
+++ b/Marlin/language.h
@@ -40,12 +40,14 @@
 #define FIRMWARE_URL "https://github.com/MarlinFirmware/Marlin"
 
 #if MB(ULTIMAKER)|| MB(ULTIMAKER_OLD)|| MB(ULTIMAIN_2)
+  #undef FIRMWARE_URL
   #define MACHINE_NAME "Ultimaker"
   #define FIRMWARE_URL "http://firmware.ultimaker.com"
 #elif MB(RUMBA)
   #define MACHINE_NAME "Rumba"
 #elif MB(3DRAG)
   #define MACHINE_NAME "3Drag"
+  #undef FIRMWARE_URL
   #define FIRMWARE_URL "http://3dprint.elettronicain.it/"
 #elif MB(K8200)
   #define MACHINE_NAME "K8200"
@@ -53,12 +55,15 @@
   #define MACHINE_NAME "Makibox"
 #elif MB(SAV_MKI)
   #define MACHINE_NAME "SAV MkI"
+  #undef FIRMWARE_URL
   #define FIRMWARE_URL "https://github.com/fmalpartida/Marlin/tree/SAV-MkI-config"
 #elif MB(WITBOX)
   #define MACHINE_NAME "WITBOX"
+  #undef FIRMWARE_URL
   #define FIRMWARE_URL "http://www.bq.com/gb/downloads-witbox.html"
 #elif MB(HEPHESTOS)
   #define MACHINE_NAME "HEPHESTOS"
+  #undef FIRMWARE_URL
   #define FIRMWARE_URL "http://www.bq.com/gb/downloads-prusa-i3-hephestos.html"
 #else // Default firmware set to Mendel
   #define MACHINE_NAME "Mendel"
diff --git a/Marlin/pins.h b/Marlin/pins.h
index 1e79a0cad..3c75a73ba 100644
--- a/Marlin/pins.h
+++ b/Marlin/pins.h
@@ -127,10 +127,13 @@
 #define _E3_PINS
 
 #if EXTRUDERS > 1
+  #undef _E1_PINS
   #define _E1_PINS E1_STEP_PIN, E1_DIR_PIN, E1_ENABLE_PIN, HEATER_1_PIN, analogInputToDigitalPin(TEMP_1_PIN),
   #if EXTRUDERS > 2
+    #undef _E2_PINS
     #define _E2_PINS E2_STEP_PIN, E2_DIR_PIN, E2_ENABLE_PIN, HEATER_2_PIN, analogInputToDigitalPin(TEMP_2_PIN),
     #if EXTRUDERS > 3
+      #undef _E3_PINS
       #define _E3_PINS E3_STEP_PIN, E3_DIR_PIN, E3_ENABLE_PIN, HEATER_3_PIN, analogInputToDigitalPin(TEMP_3_PIN),
     #endif
   #endif
diff --git a/Marlin/pins_3DRAG.h b/Marlin/pins_3DRAG.h
index 9db6b56e4..fa54eea61 100644
--- a/Marlin/pins_3DRAG.h
+++ b/Marlin/pins_3DRAG.h
@@ -4,18 +4,25 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef Z_ENABLE_PIN
 #define Z_ENABLE_PIN       63
 
+#undef X_MAX_PIN
+#undef Y_MAX_PIN
+#undef Z_MAX_PIN
 #define X_MAX_PIN          2
 #define Y_MAX_PIN          15
 #define Z_MAX_PIN          -1
 
+#undef SDSS
 #define SDSS               25//53
 
-#define BEEPER             33
-
+#undef FAN_PIN
 #define FAN_PIN            8
 
+#undef HEATER_1_PIN
+#undef HEATER_2_PIN
+#undef HEATER_BED_PIN
 #define HEATER_0_PIN       10
 #define HEATER_1_PIN       12
 #define HEATER_2_PIN       6
@@ -23,8 +30,15 @@
 #define HEATER_BED_PIN     9    // BED
 
 #if defined(ULTRA_LCD) && defined(NEWPANEL)
+  #undef BEEPER
   #define BEEPER -1
 
+  #undef LCD_PINS_RS
+  #undef LCD_PINS_ENABLE
+  #undef LCD_PINS_D4
+  #undef LCD_PINS_D5
+  #undef LCD_PINS_D6
+  #undef LCD_PINS_D7
   #define LCD_PINS_RS 27
   #define LCD_PINS_ENABLE 29
   #define LCD_PINS_D4 37
@@ -33,7 +47,15 @@
   #define LCD_PINS_D7 31
 
   // Buttons
+  #undef BTN_EN1
+  #undef BTN_EN2
+  #undef BTN_ENC
   #define BTN_EN1 16
   #define BTN_EN2 17
   #define BTN_ENC 23 //the click
+
+#else
+
+  #define BEEPER 33
+
 #endif // ULTRA_LCD && NEWPANEL
diff --git a/Marlin/pins_5DPRINT.h b/Marlin/pins_5DPRINT.h
index 20e69ef36..b483326d3 100644
--- a/Marlin/pins_5DPRINT.h
+++ b/Marlin/pins_5DPRINT.h
@@ -64,6 +64,15 @@
 // Microstepping pins
 // Note that the pin mapping is not from fastio.h
 // See Sd2PinMap.h for the pin configurations
+
+#undef X_MS1_PIN
+#undef X_MS2_PIN
+#undef Y_MS1_PIN
+#undef Y_MS2_PIN
+#undef Z_MS1_PIN
+#undef Z_MS2_PIN
+#undef E0_MS1_PIN
+#undef E0_MS2_PIN
 #define X_MS1_PIN 25
 #define X_MS2_PIN 26
 #define Y_MS1_PIN 9
diff --git a/Marlin/pins_AZTEEG_X3.h b/Marlin/pins_AZTEEG_X3.h
index d346e0bd2..3359fe8b1 100644
--- a/Marlin/pins_AZTEEG_X3.h
+++ b/Marlin/pins_AZTEEG_X3.h
@@ -4,7 +4,10 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef FAN_PIN
 #define FAN_PIN            9 // (Sprinter config)
+
+#undef HEATER_1_PIN
 #define HEATER_1_PIN       -1
 
 #ifdef TEMP_STAT_LEDS
diff --git a/Marlin/pins_AZTEEG_X3_PRO.h b/Marlin/pins_AZTEEG_X3_PRO.h
index 5d0d70db6..c58c359e6 100644
--- a/Marlin/pins_AZTEEG_X3_PRO.h
+++ b/Marlin/pins_AZTEEG_X3_PRO.h
@@ -4,7 +4,9 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef FAN_PIN
 #define FAN_PIN             9 // (Sprinter config)
+
 #define BEEPER             33
 
 #define E2_STEP_PIN        23
@@ -19,6 +21,9 @@
 #define E4_DIR_PIN         37
 #define E4_ENABLE_PIN      42
 
+#undef HEATER_1_PIN
+#undef HEATER_2_PIN
+#undef HEATER_3_PIN
 #define HEATER_1_PIN       -1
 #define HEATER_2_PIN       16
 #define HEATER_3_PIN       17
@@ -27,6 +32,8 @@
 #define HEATER_6_PIN        6
 #define HEATER_7_PIN       11
 
+#undef TEMP_2_PIN
+#undef TEMP_3_PIN
 #define TEMP_2_PIN         12   // ANALOG NUMBERING
 #define TEMP_3_PIN         11   // ANALOG NUMBERING
 #define TEMP_4_PIN         10   // ANALOG NUMBERING
diff --git a/Marlin/pins_BAM_DICE_DUE.h b/Marlin/pins_BAM_DICE_DUE.h
index c3123d043..fba7f1b8c 100644
--- a/Marlin/pins_BAM_DICE_DUE.h
+++ b/Marlin/pins_BAM_DICE_DUE.h
@@ -4,8 +4,13 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef FAN_PIN
 #define FAN_PIN             9 // (Sprinter config)
+
+#undef HEATER_1_PIN
 #define HEATER_1_PIN       -1
 
+#undef TEMP_0_PIN
+#undef TEMP_1_PIN
 #define TEMP_0_PIN          9 // ANALOG NUMBERING
 #define TEMP_1_PIN         11 // ANALOG NUMBERING
diff --git a/Marlin/pins_FELIX2.h b/Marlin/pins_FELIX2.h
index 5b31c8de6..f54de3453 100644
--- a/Marlin/pins_FELIX2.h
+++ b/Marlin/pins_FELIX2.h
@@ -4,13 +4,23 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef X_MAX_PIN
+#undef Y_MAX_PIN
+#undef Z_MAX_PIN
 #define X_MAX_PIN          -1
 #define Y_MAX_PIN          -1
 #define Z_MAX_PIN          -1
 
+#undef Y2_STEP_PIN
+#undef Y2_DIR_PIN
+#undef Y2_ENABLE_PIN
 #define Y2_STEP_PIN        -1
 #define Y2_DIR_PIN         -1
 #define Y2_ENABLE_PIN      -1
+
+#undef Z2_STEP_PIN
+#undef Z2_DIR_PIN
+#undef Z2_ENABLE_PIN
 #define Z2_STEP_PIN        -1
 #define Z2_DIR_PIN         -1
 #define Z2_ENABLE_PIN      -1
@@ -19,11 +29,14 @@
 #define E1_DIR_PIN         34
 #define E1_ENABLE_PIN      30
 
+#undef SDPOWER
 #define SDPOWER             1
 
+#undef FAN_PIN
 #define FAN_PIN             9 // (Sprinter config)
 #define PS_ON_PIN          12
 
+#undef HEATER_1_PIN
 #define HEATER_1_PIN        7 // EXTRUDER 2
 
 #if defined(ULTRA_LCD) && defined(NEWPANEL)
diff --git a/Marlin/pins_HEPHESTOS.h b/Marlin/pins_HEPHESTOS.h
index 8fc5ba643..ec8d3fab2 100644
--- a/Marlin/pins_HEPHESTOS.h
+++ b/Marlin/pins_HEPHESTOS.h
@@ -4,5 +4,8 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef FAN_PIN
 #define FAN_PIN             9 // (Sprinter config)
+
+#undef HEATER_1_PIN
 #define HEATER_1_PIN       -1
diff --git a/Marlin/pins_WITBOX.h b/Marlin/pins_WITBOX.h
index a4eb0e313..037b38de8 100644
--- a/Marlin/pins_WITBOX.h
+++ b/Marlin/pins_WITBOX.h
@@ -4,5 +4,8 @@
 
 #include "pins_RAMPS_13.h"
 
+#undef FAN_PIN
 #define FAN_PIN             9 // (Sprinter config)
+
+#undef HEATER_1_PIN
 #define HEATER_1_PIN       -1
diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index d3397ad56..bae91039f 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -97,11 +97,19 @@ static volatile bool endstop_z_hit = false;
 #if defined(Y_MAX_PIN) && Y_MAX_PIN >= 0
   static bool old_y_max_endstop = false;
 #endif
-
-static bool old_z_min_endstop = false, old_z_max_endstop = false;
-
+#if defined(Z_MIN_PIN) && Z_MIN_PIN >= 0
+  static bool old_z_min_endstop = false;
+#endif
+#if defined(Z_MAX_PIN) && Z_MAX_PIN >= 0
+  static bool old_z_max_endstop = false;
+#endif
 #ifdef Z_DUAL_ENDSTOPS
-  static bool old_z2_min_endstop = false, old_z2_max_endstop = false;
+  #if defined(Z2_MIN_PIN) && Z2_MIN_PIN >= 0
+    static bool old_z2_min_endstop = false;
+  #endif
+  #if defined(Z2_MAX_PIN) && Z2_MAX_PIN >= 0
+    static bool old_z2_max_endstop = false;
+  #endif
 #endif
 
 static bool check_endstops = true;
diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index 7b7eceaf7..18f9d6c00 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -586,7 +586,9 @@ void manage_heater() {
     if (ct < max(HEATER_0_MINTEMP, 0.01)) min_temp_error(0);
   #endif //HEATER_0_USES_MAX6675
 
-  unsigned long ms = millis();
+  #if defined(WATCH_TEMP_PERIOD) || !defined(PIDTEMPBED) || HAS_AUTO_FAN
+    unsigned long ms = millis();
+  #endif
 
   // Loop through all extruders
   for (int e = 0; e < EXTRUDERS; e++) {
diff --git a/Marlin/ultralcd.cpp b/Marlin/ultralcd.cpp
index 98629ad51..c85f8e14d 100644
--- a/Marlin/ultralcd.cpp
+++ b/Marlin/ultralcd.cpp
@@ -25,10 +25,6 @@ int absPreheatFanSpeed;
   unsigned long message_millis = 0;
 #endif
 
-#ifdef ULTIPANEL
-  static float manual_feedrate[] = MANUAL_FEEDRATE;
-#endif // ULTIPANEL
-
 /* !Configuration settings */
 
 //Function pointer to menu functions.
@@ -38,193 +34,197 @@ uint8_t lcd_status_message_level;
 char lcd_status_message[LCD_WIDTH+1] = WELCOME_MSG;
 
 #ifdef DOGLCD
-#include "dogm_lcd_implementation.h"
+  #include "dogm_lcd_implementation.h"
 #else
-#include "ultralcd_implementation_hitachi_HD44780.h"
+  #include "ultralcd_implementation_hitachi_HD44780.h"
 #endif
 
-/* Different menus */
+// The main status screen
 static void lcd_status_screen();
-#ifdef ULTIPANEL
-extern bool powersupply;
-static void lcd_main_menu();
-static void lcd_tune_menu();
-static void lcd_prepare_menu();
-static void lcd_move_menu();
-static void lcd_control_menu();
-static void lcd_control_temperature_menu();
-static void lcd_control_temperature_preheat_pla_settings_menu();
-static void lcd_control_temperature_preheat_abs_settings_menu();
-static void lcd_control_motion_menu();
-static void lcd_control_volumetric_menu();
-#ifdef DOGLCD
-static void lcd_set_contrast();
-#endif
-#ifdef FWRETRACT
-static void lcd_control_retract_menu();
-#endif
-static void lcd_sdcard_menu();
 
-#ifdef DELTA_CALIBRATION_MENU
-static void lcd_delta_calibrate_menu();
-#endif // DELTA_CALIBRATION_MENU
-
-#if defined(MANUAL_BED_LEVELING)
-#include "mesh_bed_leveling.h"
-static void _lcd_level_bed();
-static void _lcd_level_bed_homing();
-static void lcd_level_bed();
-#endif  // MANUAL_BED_LEVELING
+#ifdef ULTIPANEL
 
-static void lcd_quick_feedback();//Cause an LCD refresh, and give the user visual or audible feedback that something has happened
-
-/* Different types of actions that can be used in menu items. */
-static void menu_action_back(menuFunc_t data);
-static void menu_action_submenu(menuFunc_t data);
-static void menu_action_gcode(const char* pgcode);
-static void menu_action_function(menuFunc_t data);
-static void menu_action_sdfile(const char* filename, char* longFilename);
-static void menu_action_sddirectory(const char* filename, char* longFilename);
-static void menu_action_setting_edit_bool(const char* pstr, bool* ptr);
-static void menu_action_setting_edit_int3(const char* pstr, int* ptr, int minValue, int maxValue);
-static void menu_action_setting_edit_float3(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_float32(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_float43(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_float5(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_float51(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_float52(const char* pstr, float* ptr, float minValue, float maxValue);
-static void menu_action_setting_edit_long5(const char* pstr, unsigned long* ptr, unsigned long minValue, unsigned long maxValue);
-static void menu_action_setting_edit_callback_bool(const char* pstr, bool* ptr, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_int3(const char* pstr, int* ptr, int minValue, int maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float3(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float32(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float43(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float5(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float51(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_float52(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
-static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned long* ptr, unsigned long minValue, unsigned long maxValue, menuFunc_t callbackFunc);
-
-#define ENCODER_FEEDRATE_DEADZONE 10
-
-#if !defined(LCD_I2C_VIKI)
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-    #define ENCODER_STEPS_PER_MENU_ITEM 5
+  extern bool powersupply;
+  static float manual_feedrate[] = MANUAL_FEEDRATE;
+  static void lcd_main_menu();
+  static void lcd_tune_menu();
+  static void lcd_prepare_menu();
+  static void lcd_move_menu();
+  static void lcd_control_menu();
+  static void lcd_control_temperature_menu();
+  static void lcd_control_temperature_preheat_pla_settings_menu();
+  static void lcd_control_temperature_preheat_abs_settings_menu();
+  static void lcd_control_motion_menu();
+  static void lcd_control_volumetric_menu();
+  #ifdef DOGLCD
+    static void lcd_set_contrast();
   #endif
-  #ifndef ENCODER_PULSES_PER_STEP
-    #define ENCODER_PULSES_PER_STEP 1
+  #ifdef FWRETRACT
+    static void lcd_control_retract_menu();
   #endif
-#else
-  #ifndef ENCODER_STEPS_PER_MENU_ITEM
-    #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
+  static void lcd_sdcard_menu();
+
+  #ifdef DELTA_CALIBRATION_MENU
+    static void lcd_delta_calibrate_menu();
+  #endif
+
+  #if defined(MANUAL_BED_LEVELING)
+    #include "mesh_bed_leveling.h"
+    static void _lcd_level_bed();
+    static void _lcd_level_bed_homing();
+    static void lcd_level_bed();
   #endif
-  #ifndef ENCODER_PULSES_PER_STEP
-    #define ENCODER_PULSES_PER_STEP 1
+
+  static void lcd_quick_feedback();//Cause an LCD refresh, and give the user visual or audible feedback that something has happened
+
+  /* Different types of actions that can be used in menu items. */
+  static void menu_action_back(menuFunc_t data);
+  static void menu_action_submenu(menuFunc_t data);
+  static void menu_action_gcode(const char* pgcode);
+  static void menu_action_function(menuFunc_t data);
+  static void menu_action_sdfile(const char* filename, char* longFilename);
+  static void menu_action_sddirectory(const char* filename, char* longFilename);
+  static void menu_action_setting_edit_bool(const char* pstr, bool* ptr);
+  static void menu_action_setting_edit_int3(const char* pstr, int* ptr, int minValue, int maxValue);
+  static void menu_action_setting_edit_float3(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_float32(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_float43(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_float5(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_float51(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_float52(const char* pstr, float* ptr, float minValue, float maxValue);
+  static void menu_action_setting_edit_long5(const char* pstr, unsigned long* ptr, unsigned long minValue, unsigned long maxValue);
+  static void menu_action_setting_edit_callback_bool(const char* pstr, bool* ptr, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_int3(const char* pstr, int* ptr, int minValue, int maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float3(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float32(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float43(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float5(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float51(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_float52(const char* pstr, float* ptr, float minValue, float maxValue, menuFunc_t callbackFunc);
+  static void menu_action_setting_edit_callback_long5(const char* pstr, unsigned long* ptr, unsigned long minValue, unsigned long maxValue, menuFunc_t callbackFunc);
+
+  #define ENCODER_FEEDRATE_DEADZONE 10
+
+  #if !defined(LCD_I2C_VIKI)
+    #ifndef ENCODER_STEPS_PER_MENU_ITEM
+      #define ENCODER_STEPS_PER_MENU_ITEM 5
+    #endif
+    #ifndef ENCODER_PULSES_PER_STEP
+      #define ENCODER_PULSES_PER_STEP 1
+    #endif
+  #else
+    #ifndef ENCODER_STEPS_PER_MENU_ITEM
+      #define ENCODER_STEPS_PER_MENU_ITEM 2 // VIKI LCD rotary encoder uses a different number of steps per rotation
+    #endif
+    #ifndef ENCODER_PULSES_PER_STEP
+      #define ENCODER_PULSES_PER_STEP 1
+    #endif
   #endif
-#endif
 
 
-/* Helper macros for menus */
-
-/**
- * START_MENU generates the init code for a menu function
- */
-#define START_MENU() do { \
-  encoderRateMultiplierEnabled = false; \
-  if (encoderPosition > 0x8000) encoderPosition = 0; \
-  uint8_t encoderLine = encoderPosition / ENCODER_STEPS_PER_MENU_ITEM; \
-  if (encoderLine < currentMenuViewOffset) currentMenuViewOffset = encoderLine; \
-  uint8_t _lineNr = currentMenuViewOffset, _menuItemNr; \
-  bool wasClicked = LCD_CLICKED, itemSelected; \
-  if (wasClicked) lcd_quick_feedback(); \
-  for (uint8_t _drawLineNr = 0; _drawLineNr < LCD_HEIGHT; _drawLineNr++, _lineNr++) { \
-    _menuItemNr = 0;
-
-/**
- * MENU_ITEM generates draw & handler code for a menu item, potentially calling:
- *
- *   lcd_implementation_drawmenu_[type](sel, row, label, arg3...)
- *   menu_action_[type](arg3...)
- *
- * Examples:
- *   MENU_ITEM(back, MSG_WATCH, lcd_status_screen)
- *     lcd_implementation_drawmenu_back(sel, row, PSTR(MSG_WATCH), lcd_status_screen)
- *     menu_action_back(lcd_status_screen)
- *
- *   MENU_ITEM(function, MSG_PAUSE_PRINT, lcd_sdcard_pause)
- *     lcd_implementation_drawmenu_function(sel, row, PSTR(MSG_PAUSE_PRINT), lcd_sdcard_pause)
- *     menu_action_function(lcd_sdcard_pause)
- *
- *   MENU_ITEM_EDIT(int3, MSG_SPEED, &feedmultiply, 10, 999)
- *   MENU_ITEM(setting_edit_int3, MSG_SPEED, PSTR(MSG_SPEED), &feedmultiply, 10, 999)
- *     lcd_implementation_drawmenu_setting_edit_int3(sel, row, PSTR(MSG_SPEED), PSTR(MSG_SPEED), &feedmultiply, 10, 999)
- *     menu_action_setting_edit_int3(PSTR(MSG_SPEED), &feedmultiply, 10, 999)
- *
- */
-#define MENU_ITEM(type, label, args...) do { \
-  if (_menuItemNr == _lineNr) { \
-    itemSelected = encoderLine == _menuItemNr; \
-    if (lcdDrawUpdate) \
-      lcd_implementation_drawmenu_ ## type(itemSelected, _drawLineNr, PSTR(label), ## args); \
-    if (wasClicked && itemSelected) { \
-      menu_action_ ## type(args); \
-      return; \
-    } \
-  } \
-  _menuItemNr++; \
-} while(0)
+  /* Helper macros for menus */
 
-#ifdef ENCODER_RATE_MULTIPLIER
   /**
-   * MENU_MULTIPLIER_ITEM generates drawing and handling code for a multiplier menu item
+   * START_MENU generates the init code for a menu function
    */
-  #define MENU_MULTIPLIER_ITEM(type, label, args...) do { \
+  #define START_MENU() do { \
+    encoderRateMultiplierEnabled = false; \
+    if (encoderPosition > 0x8000) encoderPosition = 0; \
+    uint8_t encoderLine = encoderPosition / ENCODER_STEPS_PER_MENU_ITEM; \
+    if (encoderLine < currentMenuViewOffset) currentMenuViewOffset = encoderLine; \
+    uint8_t _lineNr = currentMenuViewOffset, _menuItemNr; \
+    bool wasClicked = LCD_CLICKED, itemSelected; \
+    if (wasClicked) lcd_quick_feedback(); \
+    for (uint8_t _drawLineNr = 0; _drawLineNr < LCD_HEIGHT; _drawLineNr++, _lineNr++) { \
+      _menuItemNr = 0;
+
+  /**
+   * MENU_ITEM generates draw & handler code for a menu item, potentially calling:
+   *
+   *   lcd_implementation_drawmenu_[type](sel, row, label, arg3...)
+   *   menu_action_[type](arg3...)
+   *
+   * Examples:
+   *   MENU_ITEM(back, MSG_WATCH, lcd_status_screen)
+   *     lcd_implementation_drawmenu_back(sel, row, PSTR(MSG_WATCH), lcd_status_screen)
+   *     menu_action_back(lcd_status_screen)
+   *
+   *   MENU_ITEM(function, MSG_PAUSE_PRINT, lcd_sdcard_pause)
+   *     lcd_implementation_drawmenu_function(sel, row, PSTR(MSG_PAUSE_PRINT), lcd_sdcard_pause)
+   *     menu_action_function(lcd_sdcard_pause)
+   *
+   *   MENU_ITEM_EDIT(int3, MSG_SPEED, &feedmultiply, 10, 999)
+   *   MENU_ITEM(setting_edit_int3, MSG_SPEED, PSTR(MSG_SPEED), &feedmultiply, 10, 999)
+   *     lcd_implementation_drawmenu_setting_edit_int3(sel, row, PSTR(MSG_SPEED), PSTR(MSG_SPEED), &feedmultiply, 10, 999)
+   *     menu_action_setting_edit_int3(PSTR(MSG_SPEED), &feedmultiply, 10, 999)
+   *
+   */
+  #define MENU_ITEM(type, label, args...) do { \
     if (_menuItemNr == _lineNr) { \
       itemSelected = encoderLine == _menuItemNr; \
       if (lcdDrawUpdate) \
         lcd_implementation_drawmenu_ ## type(itemSelected, _drawLineNr, PSTR(label), ## args); \
       if (wasClicked && itemSelected) { \
-        encoderRateMultiplierEnabled = true; \
-        lastEncoderMovementMillis = 0; \
         menu_action_ ## type(args); \
         return; \
       } \
     } \
     _menuItemNr++; \
   } while(0)
-#endif //ENCODER_RATE_MULTIPLIER
-
-#define MENU_ITEM_DUMMY() do { _menuItemNr++; } while(0)
-#define MENU_ITEM_EDIT(type, label, args...) MENU_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
-#define MENU_ITEM_EDIT_CALLBACK(type, label, args...) MENU_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
-#ifdef ENCODER_RATE_MULTIPLIER
-  #define MENU_MULTIPLIER_ITEM_EDIT(type, label, args...) MENU_MULTIPLIER_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
-  #define MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(type, label, args...) MENU_MULTIPLIER_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
-#else //!ENCODER_RATE_MULTIPLIER
-  #define MENU_MULTIPLIER_ITEM_EDIT(type, label, args...) MENU_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
-  #define MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(type, label, args...) MENU_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
-#endif //!ENCODER_RATE_MULTIPLIER
-#define END_MENU() \
-    if (encoderLine >= _menuItemNr) { encoderPosition = _menuItemNr * ENCODER_STEPS_PER_MENU_ITEM - 1; encoderLine = encoderPosition / ENCODER_STEPS_PER_MENU_ITEM; }\
-    if (encoderLine >= currentMenuViewOffset + LCD_HEIGHT) { currentMenuViewOffset = encoderLine - LCD_HEIGHT + 1; lcdDrawUpdate = 1; _lineNr = currentMenuViewOffset - 1; _drawLineNr = -1; } \
-    } } while(0)
-
-/** Used variables to keep track of the menu */
-#ifndef REPRAPWORLD_KEYPAD
-volatile uint8_t buttons;//Contains the bits of the currently pressed buttons.
-#else
-volatile uint8_t buttons_reprapworld_keypad; // to store the reprapworld_keypad shift register values
-#endif
-#ifdef LCD_HAS_SLOW_BUTTONS
-volatile uint8_t slow_buttons;//Contains the bits of the currently pressed buttons.
-#endif
-uint8_t currentMenuViewOffset;              /* scroll offset in the current menu */
-uint32_t blocking_enc;
-uint8_t lastEncoderBits;
-uint32_t encoderPosition;
-#if (SDCARDDETECT > 0)
-bool lcd_oldcardstatus;
-#endif
-#endif //ULTIPANEL
+
+  #ifdef ENCODER_RATE_MULTIPLIER
+    /**
+     * MENU_MULTIPLIER_ITEM generates drawing and handling code for a multiplier menu item
+     */
+    #define MENU_MULTIPLIER_ITEM(type, label, args...) do { \
+      if (_menuItemNr == _lineNr) { \
+        itemSelected = encoderLine == _menuItemNr; \
+        if (lcdDrawUpdate) \
+          lcd_implementation_drawmenu_ ## type(itemSelected, _drawLineNr, PSTR(label), ## args); \
+        if (wasClicked && itemSelected) { \
+          encoderRateMultiplierEnabled = true; \
+          lastEncoderMovementMillis = 0; \
+          menu_action_ ## type(args); \
+          return; \
+        } \
+      } \
+      _menuItemNr++; \
+    } while(0)
+  #endif //ENCODER_RATE_MULTIPLIER
+
+  #define MENU_ITEM_DUMMY() do { _menuItemNr++; } while(0)
+  #define MENU_ITEM_EDIT(type, label, args...) MENU_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
+  #define MENU_ITEM_EDIT_CALLBACK(type, label, args...) MENU_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
+  #ifdef ENCODER_RATE_MULTIPLIER
+    #define MENU_MULTIPLIER_ITEM_EDIT(type, label, args...) MENU_MULTIPLIER_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
+    #define MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(type, label, args...) MENU_MULTIPLIER_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
+  #else //!ENCODER_RATE_MULTIPLIER
+    #define MENU_MULTIPLIER_ITEM_EDIT(type, label, args...) MENU_ITEM(setting_edit_ ## type, label, PSTR(label), ## args)
+    #define MENU_MULTIPLIER_ITEM_EDIT_CALLBACK(type, label, args...) MENU_ITEM(setting_edit_callback_ ## type, label, PSTR(label), ## args)
+  #endif //!ENCODER_RATE_MULTIPLIER
+  #define END_MENU() \
+      if (encoderLine >= _menuItemNr) { encoderPosition = _menuItemNr * ENCODER_STEPS_PER_MENU_ITEM - 1; encoderLine = encoderPosition / ENCODER_STEPS_PER_MENU_ITEM; }\
+      if (encoderLine >= currentMenuViewOffset + LCD_HEIGHT) { currentMenuViewOffset = encoderLine - LCD_HEIGHT + 1; lcdDrawUpdate = 1; _lineNr = currentMenuViewOffset - 1; _drawLineNr = -1; } \
+      } } while(0)
+
+  /** Used variables to keep track of the menu */
+  #ifndef REPRAPWORLD_KEYPAD
+    volatile uint8_t buttons; // Bits of the pressed buttons.
+  #else
+    volatile uint8_t buttons_reprapworld_keypad; // The reprapworld_keypad shift register values
+  #endif
+  #ifdef LCD_HAS_SLOW_BUTTONS
+    volatile uint8_t slow_buttons; // Bits of the pressed buttons.
+  #endif
+  uint8_t currentMenuViewOffset;              /* scroll offset in the current menu */
+  uint32_t blocking_enc;
+  uint8_t lastEncoderBits;
+  uint32_t encoderPosition;
+  #if (SDCARDDETECT > 0)
+    bool lcd_oldcardstatus;
+  #endif
+
+#endif // ULTIPANEL
 
 menuFunc_t currentMenu = lcd_status_screen; /* function pointer to the currently active menu */
 uint32_t lcd_next_update_millis;
@@ -520,22 +520,21 @@ void _lcd_preheat(int endnum, const float temph, const float tempb, const int fa
 void lcd_preheat_pla0() { _lcd_preheat(0, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
 void lcd_preheat_abs0() { _lcd_preheat(0, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
 
-#if TEMP_SENSOR_1 != 0 //2nd extruder preheat
-  void lcd_preheat_pla1() { _lcd_preheat(1, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
-  void lcd_preheat_abs1() { _lcd_preheat(1, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
-#endif //2nd extruder preheat
+#if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_3 != 0 || TEMP_SENSOR_BED != 0 //more than one extruder present
 
-#if TEMP_SENSOR_2 != 0 //3 extruder preheat
-  void lcd_preheat_pla2() { _lcd_preheat(2, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
-  void lcd_preheat_abs2() { _lcd_preheat(2, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
-#endif //3 extruder preheat
-
-#if TEMP_SENSOR_3 != 0 //4 extruder preheat
-  void lcd_preheat_pla3() { _lcd_preheat(3, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
-  void lcd_preheat_abs3() { _lcd_preheat(3, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
-#endif //4 extruder preheat
+  #if TEMP_SENSOR_1 != 0
+    void lcd_preheat_pla1() { _lcd_preheat(1, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
+    void lcd_preheat_abs1() { _lcd_preheat(1, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
+  #endif
+  #if TEMP_SENSOR_2 != 0
+    void lcd_preheat_pla2() { _lcd_preheat(2, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
+    void lcd_preheat_abs2() { _lcd_preheat(2, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
+  #endif
+  #if TEMP_SENSOR_3 != 0
+    void lcd_preheat_pla3() { _lcd_preheat(3, plaPreheatHotendTemp, plaPreheatHPBTemp, plaPreheatFanSpeed); }
+    void lcd_preheat_abs3() { _lcd_preheat(3, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed); }
+  #endif
 
-#if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_3 != 0 //more than one extruder present
   void lcd_preheat_pla0123() {
     setTargetHotend0(plaPreheatHotendTemp);
     setTargetHotend1(plaPreheatHotendTemp);
@@ -548,54 +547,54 @@ void lcd_preheat_abs0() { _lcd_preheat(0, absPreheatHotendTemp, absPreheatHPBTem
     setTargetHotend2(absPreheatHotendTemp);
     _lcd_preheat(3, absPreheatHotendTemp, absPreheatHPBTemp, absPreheatFanSpeed);
   }
-#endif //more than one extruder present
 
-void lcd_preheat_pla_bedonly() { _lcd_preheat(0, 0, plaPreheatHPBTemp, plaPreheatFanSpeed); }
-void lcd_preheat_abs_bedonly() { _lcd_preheat(0, 0, absPreheatHPBTemp, absPreheatFanSpeed); }
+  #if TEMP_SENSOR_0 != 0
 
-static void lcd_preheat_pla_menu() {
-  START_MENU();
-  MENU_ITEM(back, MSG_PREPARE, lcd_prepare_menu);
-  MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H1, lcd_preheat_pla0);
-  #if TEMP_SENSOR_1 != 0 //2 extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H2, lcd_preheat_pla1);
-  #endif //2 extruder preheat
-  #if TEMP_SENSOR_2 != 0 //3 extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H3, lcd_preheat_pla2);
-  #endif //3 extruder preheat
-  #if TEMP_SENSOR_3 != 0 //4 extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H4, lcd_preheat_pla3);
-  #endif //4 extruder preheat
-  #if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_3 != 0 //all extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_PLA_ALL, lcd_preheat_pla0123);
-  #endif //all extruder preheat
-  #if TEMP_SENSOR_BED != 0
-    MENU_ITEM(function, MSG_PREHEAT_PLA_BEDONLY, lcd_preheat_pla_bedonly);
-  #endif
-  END_MENU();
-}
+    void lcd_preheat_pla_bedonly() { _lcd_preheat(0, 0, plaPreheatHPBTemp, plaPreheatFanSpeed); }
+    void lcd_preheat_abs_bedonly() { _lcd_preheat(0, 0, absPreheatHPBTemp, absPreheatFanSpeed); }
 
-static void lcd_preheat_abs_menu() {
-  START_MENU();
-  MENU_ITEM(back, MSG_PREPARE, lcd_prepare_menu);
-  MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H1, lcd_preheat_abs0);
-  #if TEMP_SENSOR_1 != 0 //2 extruder preheat
-	  MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H2, lcd_preheat_abs1);
-  #endif //2 extruder preheat
-  #if TEMP_SENSOR_2 != 0 //3 extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H3, lcd_preheat_abs2);
-  #endif //3 extruder preheat
-  #if TEMP_SENSOR_3 != 0 //4 extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H4, lcd_preheat_abs3);
-  #endif //4 extruder preheat
-  #if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_3 != 0 //all extruder preheat
-    MENU_ITEM(function, MSG_PREHEAT_ABS_ALL, lcd_preheat_abs0123);
-  #endif //all extruder preheat
-  #if TEMP_SENSOR_BED != 0
-    MENU_ITEM(function, MSG_PREHEAT_ABS_BEDONLY, lcd_preheat_abs_bedonly);
+    static void lcd_preheat_pla_menu() {
+      START_MENU();
+      MENU_ITEM(back, MSG_PREPARE, lcd_prepare_menu);
+      MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H1, lcd_preheat_pla0);
+      #if TEMP_SENSOR_1 != 0
+        MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H2, lcd_preheat_pla1);
+      #endif
+      #if TEMP_SENSOR_2 != 0
+        MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H3, lcd_preheat_pla2);
+      #endif
+      #if TEMP_SENSOR_3 != 0
+        MENU_ITEM(function, MSG_PREHEAT_PLA_N MSG_H4, lcd_preheat_pla3);
+      #endif
+      MENU_ITEM(function, MSG_PREHEAT_PLA_ALL, lcd_preheat_pla0123);
+      #if TEMP_SENSOR_BED != 0
+        MENU_ITEM(function, MSG_PREHEAT_PLA_BEDONLY, lcd_preheat_pla_bedonly);
+      #endif
+      END_MENU();
+    }
+
+    static void lcd_preheat_abs_menu() {
+      START_MENU();
+      MENU_ITEM(back, MSG_PREPARE, lcd_prepare_menu);
+      MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H1, lcd_preheat_abs0);
+      #if TEMP_SENSOR_1 != 0
+        MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H2, lcd_preheat_abs1);
+      #endif
+      #if TEMP_SENSOR_2 != 0
+        MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H3, lcd_preheat_abs2);
+      #endif
+      #if TEMP_SENSOR_3 != 0
+        MENU_ITEM(function, MSG_PREHEAT_ABS_N MSG_H4, lcd_preheat_abs3);
+      #endif
+      MENU_ITEM(function, MSG_PREHEAT_ABS_ALL, lcd_preheat_abs0123);
+      #if TEMP_SENSOR_BED != 0
+        MENU_ITEM(function, MSG_PREHEAT_ABS_BEDONLY, lcd_preheat_abs_bedonly);
+      #endif
+      END_MENU();
+    }
   #endif
-  END_MENU();
-}
+
+#endif // more than one temperature sensor present
 
 void lcd_cooldown() {
   setTargetHotend0(0);
@@ -618,7 +617,7 @@ static void lcd_prepare_menu() {
   MENU_ITEM(function, MSG_SET_HOME_OFFSETS, lcd_set_home_offsets);
   //MENU_ITEM(gcode, MSG_SET_ORIGIN, PSTR("G92 X0 Y0 Z0"));
   #if TEMP_SENSOR_0 != 0
-    #if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_BED != 0
+    #if TEMP_SENSOR_1 != 0 || TEMP_SENSOR_2 != 0 || TEMP_SENSOR_3 != 0 || TEMP_SENSOR_BED != 0
       MENU_ITEM(submenu, MSG_PREHEAT_PLA, lcd_preheat_pla_menu);
       MENU_ITEM(submenu, MSG_PREHEAT_ABS, lcd_preheat_abs_menu);
     #else