I have a new Z80BK bgf.I can get it running with the kill switch not connected.I'm running 16 t0 1 oil.New spark plug ngk b6hs and wire.Well here is the problem running bad no power and revs really high when trying to stop with clutch lever in.I checked float it's at 21mm and have a o ring in the carb which is a nt carb.The throttle needle is moving freely and in right, Idle screw is not screwed in very far.It revs to high to try to find a air leak.The throttle cable is not adjusted to tight either.The jets are in tight too,and clean.Any other ideas please tell me.Thanks