I have a 3D printer again, so I printed some of these out.
The pins were too small between the base and the top bit to print reliably. I've made them bigger.
I also corrected the math for positioning the pick and feed holes so it scales correctly for different tape widths.
I'm printing them out again before I post the updated code, but the C1 end effector still has a couple hours to go for it's latest revision.