I finally got around to looking at the washer and it wasn’t the belt or the pulley. The drive motor is mounted on a sliding assembly with nylon bushings which moves it left or right depending on which cycle is running. The track and bushings were full of caked on gunk and rust preventing the motor from sliding all the way and tightening the tension on the belt for the spin cycle and also stopping the waterpump from spinning properly. I removed the motor and mounting bracket and cleaned/scraped all the gunk from the bracket. I cleaned the motor with air from my compressor. I then hit the bracket with a coat of Tremclad, cleaned all the nylon bushings and then re-assembled. I put a touch of bearing grease on the track and the machine now runs like new. It didn’t cost me anything except time.