ok i took my 600 out and it would rev past 6500 then it got lower and lower to where it would harldy hit engagement rpm. i am thinking maybe throttle override screwing up? the cyls are really cold and pipe extremly hot. maybe the tors is killing the motor over a certain amount of throttle but since i am giving it gas it is not burning all of it in the cylinder from build up and burning in the exhaust on its way out causing the cyls to be cold and pipes hot?