i just cant get this thing to run corectly when i yank the throttle form eidle it stops or makes a backfireing noise ? wtf! here's my setup : curtis sparks ceramic exh uni filter no cams yet altitude is about 2600 ft. right now i have the 50 pilot, 180 main and the air screw is about 2.25 out, sparks needle third clip (std). the bike runs fine from idle to mid. If i rev the engine a bit and yank it it seems fine.


hope some one out there can help


thanks!