We bought a used race quad a few months ago for our young son to race. It ran great until the race this past weekend. A few days before the race we started it to make sure everything was set and noticed that it idles great. When you give it gas it seems to cut out. Cleaned the carb atleast 10 times, drained the gas to check mixture still same thing. Took it to a shop they can't seem to figure it out either. Any suggestions? Need to get it running again for the little guy!