whoops.. i see you are running rich and misread it to mean a rich idle..
You know the cure for rich idle..
If you are running rich pull the slide and needle out (#3 and 4) and clip the needle to a higher groove. This will allow less gas to get in during mid range operation. If you are rich at wide open throttle, you need a smaller main jet.
Its a big "IF" unless you have tested the bike properly.. that means running at a certain speed for a quarter mile or so and killiing the engine at that speed.. coast to a stop and remove the spark plug and see whats up.. At some speeds you may be rich. The cure for richness at that speed is different, depending on what speed it is.