i took my sled up up to michigan a couple weeks ago and manged to find some snow. i noticed when i would hold it wide open for a while or i would be cruising from 70-90 mph, the the motor didnt want to rev past 7000 rpm. after u hold it it down for a while or get on and off the gas it would come back up to about 8000 rpm. this was getting very frustrating as my dads new dragon would walk past me when this happened. (its dead nuts if everythings working right). it feels like a clutch problem, not engine. any input would be great thanx!