Can anybody tell me how to get rid of 2 really horrible squealing - no howling disc brakes? They're on a Specialized Stumpy Expert so are not cheap end gear. The LBS have had the discs out and cleaned them rubbed the pads down but this hasn't worked. Motorbike discs don't squal any more (some might sometimes) so why are bike discs still susceptible to this awful screaching? They even start to screach when dry though not nearly as badly. Any advice gratefully received. Ultimate solution to change discs and pads perhaps.