Good maintenance is worth good money. Unfortunately, even if they do a perfect job on the carbs, you'll still have OEM carbs that are just nice and clean. You won't be getting the important mods that SISF has come up with that cure some of the OEM problems, no 2-minute mod, no bowl drains tubes, etc. Those mods alone are worth pulling the carbs and sending them to SISF rather than having the dealer just clean and reinstall the OEM units, I think. I did those mods myself, so the labor cost me nothing but a couple of beers. If that's not possible for you, consider sending them to Steve.