Tightened the belt, but that didn’t help. Popped the agitator off and saw that the inner basket hub had disintegrated. Ordered a new hub, nut, spring ring, and belt.
I have the ultimate set of tools so I didn’t buy the spanner wrench. I did have to cut the frozen hub nut off, other than that, everything went smoothly. The videos were very helpful. The parts arrived the day after I ordered them.
I also took some time to clean 20 years of machismo off of the inner and outer baskets.
$80 in parts vs a new $300 machine. I should get another 10 years out of this machine.