Parametric Fan Adapter with Fan Plate Thickness

I ran across sheriftaher's excellent fan adapter SCAD but needed to make some adjustments to get what I needed. This SCAD file allows you to change the thickness of fan 1's mounting plate. I had to replace a 40mm fan on my A8 and didn't have any 40 mil's laying around. Because I was removing the 40 mil, I had to account for its depth when replacing it with a 50 mil. It would have been easier to find shorter bolts but what good is it to have a 3D printer if you can't just make what you need on th