Got it from the Power Commander's instructions.
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You can also adjust your Power Commander using the face
plate buttons as described below.
1) With the ignition off, hold down all three buttons on the
Power Commander II unit.
2) While still holding down the buttons, turn the ignition on.
3) Release buttons.
4) Select the range you wish to adjust: Low, Med, High, by
pushing the corresponding button once.
5) At this point holding that button down will move the lights
down ( leaning out the mixture).
6) Pushing the button repeatedly will move the light up
(richening the mixture).
7) When the two center light are lit up this is the “0†setting.After making your adjustments wait 20 seconds before starting
the bike or turning it off. This allows the settings to be saved to
memory. To verify that it is safe to start the bike, move the
throttle and watch to see if the lights move up and down the
scale. If they do, you may start or turn off the bike.
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Try dropping each range a bar or 2.
Also I heard all dynos show a properly tuned bike as being rich. This is due to the fact that the dyno doesn't account for the ram-air effect. When riding in the real world the bike is getting more air than it is sitting on a dyno, so it will in turn lean out that richness. I'm not sure if that's true or not but it seems to make sense.