I was having some problems. My Blaster wont idles unless i keep hitting the throttle. Then once i get to gears 4,5, and 6 it starts to bog and loose power, sometimes it even cuts off. I have a uni air filter & is also mixing my own oil at a 32:1 ratio. Im planing on taking my air lid off. Im in Central PA but im not sure the sea level or my elevation level. I have a stock jet (230) if that helps:-/X(