best and easiest way to adjust carb is with Vacuum gauge, super easy and gauges are cheap, works good for timing also, google and see video'sThat's exactly why I love them so much, they're relatively simple. With that being said I'm still learning and trying to figure out my way around it. As far as the fuel goes, how do I go about adjusting that? Is it just the screws on the carb or something more?