Woo! It spins, it fits, it smooth af. Today is a good day, I am printing out a worm gear set for each printer because I am onto some good stuff. I am still letting paranoia get to me and I am worried about the flexible drive shaft not turning smoothly but one hurdle at a time. I have motion, I almost have the extruder dialed in, I am feeling like I can get this printer done before the end of the month.