I just noticed while cleaning the car that the driver rear rotor has 3 quite visible cracks (roughly 1/2" long each)propagating between the flat surface of the rotor hat to the inner most pad surface. I haven't tracked the car and certainly don't drive it that hard. Is there a remote chance of getting this replaced under warranty? I know that typically brake related issues are considered 'wear items' and not covered but this seems more of a manufacturing defect. Any thoughts or experience on this out there?