my name is rich and i have a problem if anyone can help me..i have the grubee star fire 66cc motor and i adjusted the needle in the carb to the top notch and it reved really high so i put it back in the starting position wich is the middle..when i tried to start my bike up again it wouldnt fire at all so i change spark plug and ignition coil but still wont fire up..could it be the magneto or did i burn the motor?? help me if u have any idea what might have happend