I need some help dialing in my sons 50. I added the FMF powercore 4 pipe and switched out the stock air filter housing for the twin-air. I got the bike running great and sounds much better...which my son thinks is very cool. The problem is when you first hit the throttle it almost stalls. If you go slowly it runs great. Not very familiar with how to re-jet the carb. All I did so far was adjust the idle a little.
Any help you can give would be appreciated...
Thanks,
Mike