904 Transmission Stopped Going Into Gear

I hear you. No way of knowing what happened before you.

I would guess someone used the wrong thrust washers, did not have enough endplay, and then they tried over tightening the front band when the trans started to act up. But that's all just a guess.

I've already got the valve body back together and everything on it matched up to the pictures in the rebuild manual so I'm not worried about it at this point.