well i learned how to do it in my motorcycle maintaince class.. i brought my carbs in and he showed me what the dealership and mechanic's would charge me big $$$$ to do and its fairly simple...
we opened it up and sprayed some carb cleaner inside.. i took out the old jets and went to the dealership and ordered some new ones (so call ahead make sure they have in stock or order then before you take the carbs out) you also have the choice at that time to replace the floats and stuff like that which in most cases its not needed... once you have replaced the jets and sprayed the carb cleaner in there pretty good use compressed air (air tools, gas station guage to put air in your tire or even those bottled air for computer keyboards) and clean out the carb spray real good and put it back on the bike basicly that was it.