i know its not a snowmobile but its a snowmobile engine. i recently put a rotax 440 on a buggy style go kart. last week i got it running, took it for a ride and the cvt clutch system worked fine but the belt was alittle loose. i made it adjustable because the snowmobile jackshaft is hooked to a chain going to my axle. well i tightened the belt and now it clutches wont move out of low gear. also the engine runs great but at 100% throttle it bogs, but say at 90% it does fine, is there any correlation.