Like a shop? Ted up at rosey toes is probably your best bet for old bikes. I've watched that guy balance a 4 bank of carbs by ear in 10 minutes, pretty impressive. If the carbs need to come apart though, its gonna get a bit pricey, but that will be the same no matter where you end up going. I think labor for cleaning and rebuild on 4 carbs books in at around 2 hours shop time plus parts.