You would be better off taking care of this problem yourself. With my experience with this annoying problem it may be a hard sell to get them to fix it for you for free. You can use this discussion as a reference...
http://www.insightcentral.net/forum/viewtopic.php?t=307
Run channel fix use Shin Etsu...
http://www.insightcentral.net/forum/viewtopic.php?t=986
Personally I wouldn't buy the Honda Extended Warranty. Once you get the headlights, run chanel, and seatbelt problem fixed you probably won't ever use the warranty again. If you are willing to plunk down $1100 for the warranty figure out if it will be cheaper to fix those small problems yourself and save that money for a rainy day.