I just got the top and bottom end rebuilt. It was broken in properly and runs great. The quad started missing a couple gears here and there. I thought I was just not shifting right. Well the problem got worse and now I only have a couple gears left. I dont know which ones they are, but they only engage sometimes. When I oush down on the shifter, I can go down as many clicks below first gear without stopping. The clutches do work when I get it into a gear, and the shifter is not loose which I was hoping was the problem.