Dennis ---------------HEAR THIS-------------Center you spraybar which will wind up to be 3:00 position (nipple). You can't set the ST carb at 1/32 space or blow on it. Set low needle so the tip blocks the cats eye half way and start at 3 turns out on HS needle. Your carb is out of whack an your not going back to a good starting needle settings. 4.5 turns tells me your in to far with LS needle. If you have a tach set HS 500RPM rich and only turn LS needle 1/8 of a turn after idle pinch test. Don't worry about midrange now.