I bought these rotors in November 08, a full set front and rear for my 02 F150 4WD truck, have used them for a couple of months after each time , when driving slowly I started to hear an annoying noise, I had to apply the brakes (the recommended EBC green material ceramic pads were also installed). I decided to take my truck to the brake mechanic after getting really pissed off only to find that the front left rotor has a nice complete circular groove about 1/8 inch deep on the inside and the…