I have a 2006 Brute Force 750 with the dual carbs. It has a muzzy exhaust, snorkel kit, dynatek ignition, and stock air filter. I have been having problems with it bogging and lagging at wide open throttle. I have it ready to rejet and possibly rebuild the carb. My question is what stage dynajet kit do i need and do i have to buy 2 since its a dual carb or just 1?