Using the EBC S9 Kits with Yellowstuff Pads and USR Rotors is easy. First, make sure to upgrade both front and rear pads together if you're upgrading the rear. Don't try to remove the Thermic Black coating before installation. Just install the kit as it is. After installation, the coating will gradually wear off in the area where the pads touch the rotors within the first 10 - 20 stops. For maintenance, regularly check the pads for wear. If you notice any unusual noises or a decrease in braking performance, it might be time to replace the pads. Remember, removing the Thermic Black coating with brake cleaner or other methods isn't covered by the warranty, so avoid doing that.