thanks butch for responding, i just noticed that on my exhaust the bolt on the bottom was loose so i tightened that up. and i checked my carb and it was all tight ill check the rest of the motor, by intake tube is that the 1 that connects the cylinder to the carb? those 2 bolts that bolt to the cylinderis that what you mean? also i read on spookytooth you can drill a hole in the exhaust for better performance, where do i drill the hole? maybe right next to the bolt on the bottom? what about just taking out the bolt that i tightened? or is that holding something together? thanks butch be safe and have fun, hope to hear back from you, i live in orange county ca u?? i looked at ur profile no pics of ur ride??