diff --git a/ino/demo/demo.ino b/ino/demo/demo.ino
index d976c87..ac06f47 100644
--- a/ino/demo/demo.ino
+++ b/ino/demo/demo.ino
@@ -3,6 +3,7 @@
  * Prototype
  * Arduino Duemilanove
  * L298N shield V03
+ * https://traction-design.be/home/arduino-l298n-shield-v03-from-flamingoeda-com/
  * 
  * Pin 13 = motor A or coil A +
  * Pin 12 = motor A or coil A –
@@ -24,12 +25,12 @@ void setup() {
 
 void loop() {
   clockwise();
-  set_speed(50); 
+  set_speed(250); 
   delay(5000);
   brake();
   delay(2000);
   counter_clockwise();
-  set_speed(100);
+  set_speed(250);
   delay(5000);
   brake();
   delay(2000);
diff --git a/stl/takeup_mount_plate.stl b/stl/takeup_mount_plate.stl
index be048aa..a8f5f6a 100644
Binary files a/stl/takeup_mount_plate.stl and b/stl/takeup_mount_plate.stl differ
diff --git a/takeup.scad b/takeup.scad
index 4c2975e..20a9ab1 100755
--- a/takeup.scad
+++ b/takeup.scad
@@ -64,10 +64,7 @@ module magnetic_coupling (MAGNETS = 4, MAGNET_D = 8.1, MAGNET_H = 2.5) {
         scale([1.1, 1.1, 2]) motor_shaft();
         //magnet voids
         for (i = [0 : MAGNETS - 1]) {
-            rotate([0, 0, i * (360 / MAGNETS)]) translate([0, OFFSET, H - MAGNET_H + 1.01]) {
-                cylinder(r = MAGNET_D / 2, h = MAGNET_H, center = true, $fn = 50);
-                cylinder(r = 2 / 2, h = 20, center = true);
-            }
+            rotate([0, 0, i * (360 / MAGNETS)]) translate([0, OFFSET, H - MAGNET_H + 1.01]) cylinder(r = MAGNET_D / 2, h = MAGNET_H, center = true, $fn = 50);
         }
     }
 }
@@ -126,7 +123,7 @@ module mount_plate_void () {
 
 module mount_plate () {
     Z = 1.5;
-    D = 7.5 + 1.1;
+    D = 7.5 + 1.5;
     
     MOUNT_X = 40;
     MOUNT_Y = 55;
@@ -141,7 +138,7 @@ module mount_plate () {
         translate([-MOTOR_MOUNT_X / 2, MOTOR_MOUNT_Y / 2, 0]) motor_mount_void(D, Z);
         translate([MOTOR_MOUNT_X / 2, -MOTOR_MOUNT_Y / 2, 0]) motor_mount_void(D, Z);
         translate([-MOTOR_MOUNT_X / 2, -MOTOR_MOUNT_Y / 2, 0]) motor_mount_void(D, Z);
-        translate([-(46 / 2) + 15, 0, 0]) cylinder(r = 13.9 / 2, h = 20, center = true, $fn = 60);
+        translate([-(46 / 2) + 15 + 1, 0, 0]) cylinder(r = 15 / 2, h = 20, center = true, $fn = 60);
         translate([MOUNT_X / 2,  MOUNT_Y / 2, 0]) mount_plate_void();
         translate([-MOUNT_X / 2, MOUNT_Y / 2, 0]) mount_plate_void();
         translate([MOUNT_X / 2, -MOUNT_Y / 2, 0]) mount_plate_void();
@@ -171,7 +168,7 @@ module debug_assembled () {
 
 //
 
-PART = "magnetic_coupling";
+PART = "mount_plate";
 
 if (PART == "slip_coupling") {
     slip_coupling();