I was recently given an 84 atc200es and after some carb cleaning and timing work we were able to get it to start and idle fine. It seems to rev up fine in neutral but if you kick in gear and try to ride it hardly moves. We have gone over everything we can think of including tearing the carb apart 3 or 4 times and adjusting the valves. Everything appears to be in order it just won't move in gear. Hoping somebody can point me in some sort of direction here. Thanks