I rebuilt mine. It's not that bad....you'll need a good set of snap ring pliers and a bearing press.
I didn't run into any problems at all....just followed the drawing.
Two pointers:
1. Make sure you put the interlock pin back in.
2. Make sure you install the shifter cams and new o-rings BEFORE you install all the shafts, shifter forks, etc. Otherwise, you'll have to strip it all the way back down to put those in. Don't ask me how I know that.
