They have to fix it, they are a dealer and are required to cover the manufacturers warranty. You may get some noses turned up at you but who cares! LOL
Ask the selling dealer not to put one of their crappy looking dealership stickers on it, that way when you go to your local dealer the guys in the service department will have no idea where you got it, thats what I do.
Hopefully you'll never have to darken their door or anyone else's for a warranty issue, that'd be the ideal situation.