Hey dude, RCB covered it pretty well. Chances are it will be rich from break in. Lean the high speed needle out in 1/8 turn increments until you are happy with performance and there is a lot of smoke coming out of the pipe at all speeds. I never really mess with the low speed needle..It is pretty well set at the factory, and the high speed needle does most of the 'grunt work'. I am a hardcore basher, not so much of a racer. A racer will tell you to adjust both to get maximum performance. Does the engine pick up speed a little, then stutter and die? It is probably too lean. Does the engine get really low in RPM when you hit the gas? Does it sound bubbly? Chances are it is too rich. PS, I wouldn't have broken in the engine in the weather we are having [:@]