ok, so i've finally got my bike running with the single tm-38 carb. i started off with a #25 pilot and i couldnt get the thing to run right without turning the idle up, seemed very rich but my highest idle was with the air screw turned all the way in. decided that the smoke don't lie and i put in a #20 and the bike seems to run better, but i turned the throttle all the way closed and the bike was still idling way high, highest idle seemed to be with the air screw all the way closed, and it is still smoking like its rich at idle. bike also had a pretty hollow sound and hesitation when revving off idle. This doesnt make sense though, if it was rich, turning the air screw out should have made it better not worse. can anyone comment on this? bike is a 4 mil, ported 198/130, single tm-38, approx 3500 ft elevation and 32 degrees Farenheit