Well, the problem started with a snapped belt (ten years of good service - no noises beforehand).
So, I replaced the drive belt, the tension pulley, and the drain pump (which welded to the drive shaft, so had to be destroyed in order to be removed). After playing with it, it looks like the thrust bearing kit isn't catching and spinning the tub. If I push up on the bottom part (the plastic helix) it catches during the agitate cycle, but slips again during the spin cycle. I'm afraid that it might be some part of the transmission that's not working and that I might just have to find a new washer. Any thoughts?
Also, the new drain pump looks like it might be a dud. It leaks. A lot.
I don't know much about the physics in a washing machine, so any suggestions would be greatly appreciated