I got this raptor the other day and It isnt quite what i thought it was. I cant get it to run without backfiring out the exhaust and popping though the carb. It has a full HMF pipe, high comp piston, and stage 2 hot cams it aslo has a k&n with stock air box. I belive it has a stage 2 dyno jet kit. The only jet i can read is the pilot jet and its a 22.5 T he needle clips are on the 3rd from the bottom. I think the spacer on the needles are on wrong theres a thicker one a plastic one and a thin one Im not sure of the order they are to be in. I cleaned the carb and still the same. Theres a black hose fitting that goes between the two carb that is unhooked what does it go to?