When I picked up my 90 Wagon it had about 170K on it and the guy knew it needed a clutch, so I gave him $200 for it and dropped in a clutch. When I had the tranny out I noticed that the main shaft moved up-down, side t o side alot, when I put it back together I found out that it popped out of 5th gear. I drove it for a month like this befor the tranny finnally made really bad noises and lost 1st, 3rd, and 5th gear. I took it apart to find out it had a trashed main bearing. Moral of the story is: If it starts popping out of 5th your probly losing the main bearing.