BIKE WILL ONLY RUN HALF THROTTLE. AND IT WILL NOT RUN SMOOTH IT TRIES TOO STRAIGHTEN OUT WHEN YOU OPEN THROTTLE. AND IT BACKFRIES. HAD CARBS CLEANED AND A NEW IGNITER PUT ON. AND IT DID NOT HELP. I KNOW it got to be something simple that is wrong.fELLS LIKE SOMETHING IS TRYING TO HOLD IT BACK. tOP SPEED IS 60