Carb adjustement isn't very hard, once you can get at the adjusters. Early in the '04 production run, they changed to a special screw that required a D shaped tool for adjustment. Prior to that, they had a slotted screw hidden behund a soft metal plug. Best to refer to Dingua's web page to see where the screw is because he has a lot of pictures.
Once you have removed the covers or gotten the D tool, you simply adjust one for best idle speed, readjust the speed with the black knob below the left carb, then adjust the other for best idle speed. Especially if you live in a warm area, it is a good idea to scew the idle adjusters out about 1/4 turn from where the idle speed is fastest so the engine runs a little cooler.
A lot of people try to keep both carburettors adjusted exactly the same but, because of variations from one side to the other, it works better to adjust them individually.
