i was having the same problem with my buggy not shifting then i read a thread about it a couple of days ago. two screws on the trans. one is to keep everthing together and the other is for adjusting. adj. in for later or no shift and adj. out for sooner shift and eventually loose your screw out in the middle of a field cuz its too loose. apparantly locktite is a good idea on the adjustment screw. i adjusted mine out and i still had nothing. then i lubed it with wd40 and works like a charm.