Hey. Just a quick question here. I installed new front rotors and pads on my friends car a few weeks ago. Everthing seemed to be fine for the first week, but then he started noticing a slight squealing sound when he comes to a stop. They're ceramic pads, so that rules out the problems with semi-mets. He didn't abuse the brakes at all, but I figured that maybe a glaze developed over the pad surface somehow. There might also be grease on the pad or something. But I was just wondering what different situations usually cause this sound and what I can do to fix it. I've replaced brakes on several cars before, and I've actually never had this problem. I figured that I might lightly sand down the pads a little in case there is any glaze. But I also heard from someone a while back that if you get up to speed on the highway and then liberally press on the brakes, then that might burn off the glaze. The car has 1000 miles or less on it since the brakes went on. So, if anyone has any tips or advice I'd really appreciate it. Thanks a lot.