I recently did the cobra brake upgrade on my 99 gt... I bought brand new cobra calipers and new 13 inch stop tech drilled and slotted rotors. While driving it has made a grinding noise and later found out its the pads touching the rotors... the car drives fine, there's no smoking or over heating occurring just the annoying noise... do i just need to wear the pads down a little or is there something else i should be looking too fix... thanks