overdrive tranny problems

Look at the dog keys. Do they have lots of wear? Look at the inside of the 1-2 sleeve. Any scoring or wear there? How about the fork. Any grooving or wear? Oh, and one more thing, DO NOT shift it into 4th gear overdrive while it's on the bench with the side cover off. Sleeve moves too far and all the dog keys will pop out! Found that one out the hard way.