How would the drive belt cause the engine to loose rpms? Its a 2001 scrambler 90 2 stroke. I would think it should rev to rev limiter and stay at that limit as long as throttle stays presses until it blows up if one would hold it wide open long enough. Can someone explain I guess I dont get this 2 stroke thing. Is it sorta like a chainsaw when the chain is pinched it wont rev?