I recently bought and had LBS install HFX9 XC front and rear. Well it is just a service center that builds bikes and does repairs for local service members over here in Germany. The rear brake has been fine with no problems (knock on wood). But, the front makes this annoying squeaking noise. At first, I thought that it was just due to the break in period since it started the first time I was riding the brakes. But, then it never went away. I have ridden them about 4 times now and the sqeak is still there. I looked closely at the rotor and notice this is a slight warp in one spot which looks like it is barely touching the inside pad. QUESTION: Is it worth trying to send this front rotor back to Hayes to be replaced under warrantly or would I be wasting my time? I assume they would tell me to contact local Hayes rep on the Germany economy...but I have no clue who that would be. Thanks for the help.