Does anyone know where to get 12M Bolt Hole Disc Rotors? Dealer has only 14M bolt hole rotors and says they are also intended for use on 12M bolt studs (pre-2000 model year). I say phooey, not good, the holes should be snug on the bolts and not have gap which allows slipping back and forth when the brake is applied and released. I've read several threads regarding a klunking sound when brake is applied..... this is likely the cause.