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I have a problem that my bike doesn't want to go any faster than 45 maybe even 50. I have stock jets still and I'm not sure if that means much. When I screw out my fuel mixture screws nothing happens. I already cleaned my carbs. It is also sometimes difficult to start.
Can anyone tell me what's going on here? Valve leaking? It seems to come from ignition point. Also I can go faster that maybe 45 and shifting into 5th gear gives me no speed. Could this be my clutch?