I just purchased a used blaster for my son, and was checking the mechanics. It has a FMF gold pipe and a V-force reed, but the carb looks stock and has a 190 jet. That can't be right can it. I believe this machine had a different carb on it before I bought it, because the carb and throttle cable was not hook up. So, what size of carb, and what jet size is recommended? I know I would want to start rich and work my way down, but I never owned a blaster before and I need a starting point. Thanks