Well I am not sure this is abnormal, but my throttle seems too sensitive . I can be going along , hit a bump and all of a sudden I am off to the races. It is too easy to excellerate without trying. When I say off to the races I am talking about a burst of speed that could be dangerous. Are there any adjustments to increase the resistance in throttle to eliminate this? Could it be the bar height that allows improper position of wrist etc.?