Sup big bad john, whith the engine running, shoot little amounts of carb cleaner around the flanges of the carb, backplate, hose fittings, ets. if the engine increases in RPMs, you have found your leak, use the little red straw that the carb cleaner comes with, and be sure to only use the smallest amount of spray, but it won't hurt anything.Good Luck, keep us in touch.
Where in Cali are you?