I recently installed some slotted ATE rotors in the front of the X. They work fine, but when you jam on the brakes for a suden stop, they make a noise. Not a screech typically associated with brakes but more of a deep rotating sound. I am not sure if this is a characteristic of slotted rotors, something is wrong with my handywork, or maybe I installed the slots backwards.

Anyone have any experience with this?