I own a 2 cycle starfire 66/80cc with a 41 tooth sprocket everything else is stock. Im having a few problems that I need help with. Im a new rider and enjoying it very much but I have had it for a month and already have had many problems allow me to explain. I first built my motor to my huffy mountain bike. I then had it redone after a motor mount bolt breaking off. After it got fixed it ran great 32+ mph. My accl and clutch cable broke and I put on a new heavy duty cables on it but after I put on my accl cable it started in stopping and going stopping and going. This morning also the bottom of my exhaust fell off ( black stock exhaust ) while riding in the pooring rain and it shut off. and now I have a crome smaller exhaust. I noticed my spark wire came off the brain( black box ) so I screwed it back on and putting on the new exhaust. But now the bike wont even start. You pedal it and let off the clutch and it starts and you twist the throttle and you can hear the motor change while twisting with the handle but it wont move and it will just die down till shutting off. Any advice? THANKS MUCH I NEED THE HELP.