Don't be afraid to demand to speak with the regional service rep - he will be more interested in doing right by a customer with a warranty than the dealer might, and he can trump a dealer's service manager any time.

I had to do that with my Prelude when I first got it... two different dealers had three tries to fix a gear-grinding problem, and when the dealer I was using at the time wanted to replace the synchro and gear yet again, I asked him to call the regional service rep and get him to OK a new tranny for me, and if he didn't, then I wanted to speak to him personally. Guess what - I got a new tranny (of course, the new one did the same thing, so it was a design flaw, but whatever).

Good luck!