okay this really has me stumped my brother and i went riding last sunday at a rock quary (all morning) and his banshee ran fine, then on sunday nights we drag race all our buddies and freinds in front of my house. it was then it started running like shit. it just boggs really bad on the line. i have cleaned every thing twice (gas tank,carbs,and air filter) and the problem still exist. here is the jetting 320 mains,25 pilots,needle in middle clip,air screw 1.5 turns out. if any one can help it would be nice.
thanks.