Well, got the sub frame out in about a hour, and the trans out in another hour. Then a half hour to get it mounted on the stand and clean up a bit. Pulled it open and started pulling parts. Everything looks good. Nothing broken, bands all look good. I then grab the output shaft and turn it. Hmm, that should turn easy and smooth. Turn it again. It'* hard and not smooth at all. In fact, rather noisy. Flip the trans on the stand and remove the diff cover. I start pulling the diff out. I didn't remove the diff last week, just put the roll pin back in place. As I pull it out, a piece falls out. Hmm. Ya, I think this might be a problem.
Thrust bearing under the diff.
And a closer inspection of the diff. All the teeth on all 4 gears look like this.
Chunks of metal