diff --git a/box/ulx3s-v19.scad b/box/ulx3s-v19.scad
index 0ee4d05..ea51015 100644
--- a/box/ulx3s-v19.scad
+++ b/box/ulx3s-v19.scad
@@ -9,21 +9,13 @@ include <upbox.scad>
   BPanel        = 1;// [0:No, 1:Yes]
 //Panneau avant - Front panel
   FPanel        = 1;// [0:No, 1:Yes]
+// Font color: at height 2.7: M600; change filament
 // button pins
   Pins          = 1; // button pins
 
 //Texte façade - Front text
   Text          = 1;// [0:No, 1:Yes]
 
-// multicolor front panel
-/*
-;BEFORE_LAYER_CHANGE
-;2.7
-
-; Pause print to change filament
-M600
-*/
-
 /*//////////////////////////////////////////////////////////////////
               -  mjesečno po svojem parkir  FB Aka Heartman/Hearty 2016     -                   
               -   http://heartygfx.blogspot.com    -                  
@@ -62,7 +54,7 @@ PCBLength       = 30*2.54;
 // - Largeur PCB - PCB Width
 PCBWidth        = 17*2.54;
 // Thickness of PCB
-PCBThick        = 1.8;
+PCBThick        = 1.6;
 // - Heuteur pied - Feet height
 FootHeight      = 7;
 // - Diamètre pied - Foot diameter
@@ -108,8 +100,8 @@ Thick           = 2;//[2:5]
 // - lissage de l'arrondi - Filet smoothness  
   Resolution    = 20;//[1:100] 
 // - Tolérance - Tolerance (Panel/rails gap)
-  m             = 0.8;
-  mz            = 1.5; // panels height tolerance
+  m             = 0.5;
+  mz            = 1.0; // panels height tolerance
 // mounting legs clearance
   MountClearance = 0.1;
   // clearance between Top and Bottom shell
@@ -178,10 +170,10 @@ module connector_cut()
       // cut off for AUDIO
       translate([21.47,cy,11])
         rotate([90,0,0])
-          cylinder(d=13,h=10,$fn=32,center=true);
+          cylinder(d=13.5,h=10,$fn=32,center=true);
       // cut off for 2.5/3.3V jumper
-      translate([27.07+2.54,cy,9.5])
-        cube([13,10,5],center=true);
+      translate([27.07+2.54,cy,11])
+        cube([13,10,7],center=true);
       // cut off for USB1
       translate([8.89,cy,9.5])
         cube([13,10,9],center=true);
diff --git a/box/upbox.scad b/box/upbox.scad
index bd4b6de..d699434 100644
--- a/box/upbox.scad
+++ b/box/upbox.scad
@@ -236,6 +236,7 @@ module Coque(top=0){//Coque - Shell
                 }//fin union decoration
             }//fin difference decoration
 
+            if(MountLegSize > 0.001)
             if(top < 0.5)
             for(i = [0:1])
             union(){ //sides inner holes
@@ -251,6 +252,7 @@ module Coque(top=0){//Coque - Shell
                     }
                 }
             }
+            if(MountLegSize > 0.001)
             if(top > 0.5)
             for(i = [0:1])
             union() // sides outer holes