Last week took the bike out for a ride and it started causing a few problems. It starts no problem, it runs but I can't get it to rev up like it should it revs like it's at about half throttle and that is it. Thought the carb might have dirt in it but no luck. Took the carb off and checked it out but all looks good. It's one of my 84 200x's by the way incase anybody thinks that matters. Any help would be great.