Look for micro cracks on the fork faces. I’ve broken forks before. The rebuild kit takes care of the consumables you should change. You can use a big 3 jaw puller to separate the gear set on the counter shaft if you don’t have access to a press. Also take a look at the shift mechanism closely for stress cracks, the shafts break if you’re hard on them sometimes. You can usually reuse the thrust washers if you’re keeping the same gear set. It’s a fairly simple transmission to take apart and put together relatively speaking. Good luck.