Installed new slotted and knobbed EBC rotors on the front of my 2003 Expedition and had nothing but problems. At the same time, new EBC ceramic pads were installed and slowly lapped. Less than 5,000 miles later my front end started shaking during a stop and it's serious right now. I took it to my mechanic and he said the rotors were deformed and couldn't be cut on his lathes or some other workshops - the rotors were too stiff and broke the cutting inserts. I do not recommend using these rotors…