did you mean turn them out? in=richer
did you have your needle 4th clip from the top or bottom? what's the smallest size you have, other than the 200? drop your needle a few clips leaner, (tward the blunt end) put the 310's in, unless you have 300's, set the airscrew at 1.5, and warm it up. adjust the airscrew in or out, 1/4 turn at a time,allowing 10-20 seconds for the idle to adjust, untill it idle the highest. ride around for a couple min, and you may have to go 1/4 turn in or out after that. being rich on the idle circut will effect the needle for a few seconds, untill the engine has a chance to clean up