I have decided to change my rotor arms as i just bought this car and wanted to make sure the rotor arm and cap are new, when i removed the rotor arm 3 washers fell and thought this was strange as i have watched various videos on YouTube and never seen any washers being placed behind the rotor arm when fixed to its bracket, after some investigation i relaised that my bracket is different than the once i have looked up on the internet, the surface of my bracket is flat whilst the others i have seen on the internet have a step up where the screws are fixed, should i change my brackets or is it ok to have the rotor arms being fixed with these washers as spacers.