Anyone have to have these changed? Took truck in Sat for oil change & tire rotation. Mechanic showed me that seals were gone ,flung grease on brake pads. Good news,New rotors and associated parts under warranty. Bad news, parts overnighted from Detroit will arrive Tue. Wonder if this was caused by the nibble and shimmy I had that they fixed with new tires and steering rack. 06 F-150 SC 2wd 8' bed HD payload 7 lug rims