I rejetted my own bike with a kit ordered from Robert at Motorcycle Carbs and a K & N filter. I just wanna say...thanks to Briman for all the info on his site and the encouragement I received from members here on this site. It was easier than I thought...but here's the thing. (stock pipes) 35 main jet 147.5 pilot jet, 2 shims on the needle, mixture screw at 3 turns, as well as the k & n filter, it certainly has more power mid-range, but it sputters and stalls when I rap the throttle a bit. But if I roll it gently, no stall. It stalls also when I take off from a complete stop. Did I do something wrong....forget a step maybe? anyone have ideas, I did a search and found some stuff but not sure that it applies to this situation.