Rotors available (for now) for K-H disc brake cars

Before/After.
It's not even the visible ridge that is the issue, it's right above that.

If left alone, as the rotor hat is tapered, it only rubs the caliper seals when the pads are worn down.

Matthon, Thank you, a picture is worth a thousand words. It seems to me we should be seeking out rough cast hat rotors, 'cause they're easier to modify. The sad part is, I haven't come across any new for sale.