The mode shifter and shaft assembly bearings went bad and there was a lot of residue beneath the motor assembly from the drive belt. Replaced the shaft assembly, drive belt, tub seal and tub bearing washer. If you're going this far with the repair, I recommend replacing the split washer and tub nut as well. You may want to consider buying the available wrench for removing the tub nut. It's expensive but makes the job of removing the nut a lot easier. The videos really help to make this repair easy.