Just when you think you have seen it all, something will come along and do your head. My son brought is Powertorque over this morning after asking me yesterday what the hose from the carby was supposed to be connected to. He brought it over and handed me the hose and the plastic adaptor from the end of the decomp valve, then he started the motor and it ran fine. I removed the decomp valve and the valve was open. My head hurts trying to understand this