I replaced the front brake pads and rotors on the GP a few months back. After removing the passenger side wheel two days ago during an oil change, something caught my eye: the rotor (Centric Premium) has retaining screw holes, one of which I lined up with a threaded hole on the aftermarket Timken wheel hub. The old rotors, which were junk, did not have retaining screw holes and from what I can find poking around online, the original rotors did not either and domestic makes do not utilize such. Should I find and install appropriately sized retaining screws or am I fine without them?