Still getting noises from fron wheels when braking.

Hey, I asked for some advice about my brakes from you guys and it was indeed the rotors. They were extremely warped. I had them replaced along with the pads. Everything seemed ok for about 40 miles then the noise started coming back very slightly. It's more of a clunky sound rather than the grinding from before, it's only when I brake now though. The same thing is happening, when I have driven at higher speeds down the motorway it makes it worse. I did notice when the new rotors were fitted I rotated the wheel and you could hear a faint metallic scraping /scuffing sound. This was before the car was lowered off the ramp. Just want to find the problem. Have they put on the wrong discs or is there a deeper problem putting stress on the brakes? Cheers for the help in advance