The next time someone has noise after doing a pad slap, which is perfectly safe and not an issue if the rotors are in spec, take that sucker out and re-bed those brakes. Take it out somewhere with no traffic and no lights or stop signs and get those brakes almost smoking hot but not too the point of fade. Long, medium hard stops down to 10 mph or so. Do NOT come to a complete stop. Then, once you've got them hot, cruise for at least 10 or 15 minutes, trying not to touch the brakes while they cool. This will deposit a fresh later of pad material on the rotors that is compatible with the new pad material.
