lance44
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I really need jetting help please for 421 Cheetah Cub with 4 mil stroker and 28 mm Keihin PWK carbs. I bought it with a two into one Dynaport on it, air box without lid with proline air fitler, and boost bottle. It ran perfectly with 148 mains on 110 alcohol. I put Shearer in frame drag pipes, K&N Pods, and stock connecter tube in place of boost bottle. I put 162 mains in it and it wont rev out, it just flutters and smokes white. I went back to 148 mains and it is better and tries ha...