how long do you let it warm up before giving it gas? and you dont give it gas when the choke is on do you? which jets did you change and did you mess with the air screw. with the ethonal in the gas i would not be surprised it if was a little bad

Frank

(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves NOW-2010 silver and black tbird