Brakes Still Make Noise

[Silver 99 Camaro]

Ok...I put new rotors and pads on the front after lots of searching to make sure I did the right thing. I had the factory rotors and semi-metallic pads on before, and basically the squealing and warpage drove me nuts. so I put the Autozone Aimco rotors on with Morse ceramic pads. So far it's very smooth, and it WAS very quiet, but now a similar squealing is coming back. It usually happends right before the car comes to a stop, and it's still no where near as bad as the semi-mets. I did not put anti-squeal stuff on the back of the pads because they came with the rubber anti-squeal strips on the back already. So does anybody know why ALL pads seems to squeal, at least a little?

[Ian]

file the front of the pad, facing the direction that the rotor will first come into contact with it, on something like a 45* angle or so.

like this:

rotor direction -----> /____ <---pad