In my travels, I picked up an almost new set of gears, and shifter clutches - so it's time.
1. Remove transmission
2. Remove top cover - Remove shift drum
3. Remove sprocket and side cover
4. Loose Rollers !
(Don't worry, the main shaft and
counter shaft rollers are different lengths)
5. Remove mainshaft, gears, thrust washers, etc.
6. Replace bad stuff
7. Assemble in Reverse Order ???