axleaxlefudgebend = 3;
axlepadlen = 1.0;
+armend_length = 120;
+
prongthick=selsz(5,5);
prongwidth=selsz(5,5);
prongribwidth=3;
totalheight = channeldepth + armendbasethick;
stalkwidth = prongwidth + prongstalkxwidth;
-module ArmEnd(length=120){ ////toplevel
+module ArmEnd(length=armend_length){ ////toplevel
if (usedove()) {
translate([ratchettoothsmoothr, channelwidth/2, -armendbasethick]) {
rotate([0,0,-90])