was wondering if the clip on the back of inside brakepad that goes into the piston could screech.ive got a brake noise and ive replaced everything related to the brakes and its still there.wheel bearings hoses calipers pads and rotors are new.the noise stops when i hit the brakes and ive taken the pads off and used emery cloth on them.also rotors are smooth and wheel bearings have been regreased.