i just bought a 1998 banshee. it has poor throttle response and bogs when given gas while idlieing (free reving). also it feels like it doesnt have much of a power band and doesnt even try to pull the front wheels off the ground in first gear. it has a cool head 21cc domes, fresh motor .040 over,wiseco crank and pistons, v force 3 with carbon fiber reeds, 28mm keihin carbs with jjh needles on middle notch, 155 mains and 50 pilots, full toomey t-6 exhaust and the air box has 6 1inch holes drilled in the top. i have been trying to get this figured out all week and cant find the problem. i put a new set of clutches in because i thought they were slipping when the power came on but that didnt help. the gearing on it is 13/40. my elevation is also around 650ft above sea level. any help would be greatly appreciated