Just started our holiday up here in Canada and would love to have a working craft. Cannot give a comp. And don't think this is an engine issue. When throttling up it seems the engine revs higher but a disengagement is noticed..then...while moving throttle back down,it seems as if the engagement is again made and the craft makes forward progress without slipping. The only noise we here is a faint tapping sound. Any help would be greatly appreciated. Thanks you.