Nat67
Rockgoblin
EBC brakes are made exclusively in the UK and USA . I have used EBC rotors for years and found the only thing to affect the finish was using chemical cleaners , these seem to neutralise the protective coat on the rotor and rust is forever more a problem . A fact I have proved to myself with different cleaning regimes . That aside , the manufacturing quality of yours is **** . I'm not pointing any fingers here but was yours of usa or UK manufacture ? As a whole , for the price I don't think you can get a better disc ! 
