I replaced front and rear pads and rotors. All the new pads had the hole drilled in them for wear sensors. The textar pads that came off all had the probe-type wear sensors, but the new Porsche front sensors were a pad-type that looked like they would never even touch the rotor. The new rear sensors were URO brand that were probe-type. I just repaired the one front that needed repair and tied them off for now. How is the pad-type supposed to work?