Most service departments at dealers suck! Except Riva of pompano they seem good. Your better off doing it yourself or taking your quad, dirtbike, or streetbike to a professional shop that has the knowledge, experiance, and backs up there work.
I had a 250ex about 3-4 years ago and i took it to gables and it ran like crap after, the snorkle had came off the airbox cause some num nut just threw the thing together. o and they said it would be 300 bucks to rejet the mofo for 3-4 hours of work. Well i added a pipe, filter and jet kit myself, no more depending on stealer ships. O and mo fros charged like 13 bucks for a plug, they could lick my sack