The printer is up and running again. I reattached the belt with the new replacement part, lubed the rods and z axis screws with a spray can of white lithium grease, put a couple of drops of sewing machine oil on the pulley for the y axis, and tightened all the screws after reassembly.
Now all that’s left is calibration. The xyz axis calibration cube came out alright, but the surface finish test and the surfaces of my minis could be better. I also need to figure out why the hands keep getting sliced into two shells each instead of being merged as a unit.