Do the warranty conditions stipulate that a dealer must service it? if so, i see your point, otherwise, i would go to an independent or diy it. Dealers (car included) are ridiculously over priced and will bog the arm in at every opportunity.
I agree with utopia, try the pads on their own, you've only got the price of a quickly worn pair of pads to lose. The discs aren't warped are they? I didn't pick that up from your post.
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