no matter what i do i cant get them to stop squeeking. i have the light weight drag discs with billet 4 pot callipers. after i ran them for 5 minutes they were grooved, then i took out the pads sanded them and chamfered the edges of the pads cause they were square that helped for about 10 min. now anytime they get even a hint of heat in them they seem to start (slightly) dragging and squeeking.

any one else have experiance with theese?

Make sure the hat is seating on the axle flange.You may have to champher the holes and make sure the the rotor is centered in the caliper.You may have to shimm the caliper.