Small track day mishap with my 2013 S4. Stupidly I must have held the brake against my hot rotors, possibly I ran sessions too close together and the pads cooled much faster than the discs. Point is I now have uneven deposition on the rotors. Stoptech has an article with some recommendations. Unfortunately I can't find a shop that will do the job for me (garnet cleaning or abrasive pad application). Wondering what others in this situation have done?