Hi all - hoping for some advice. I painted some trim for my car using 1) 1 coat of primer 2) 3-4 coats of OEM metallic black color in a rattle can and 3) 3 coats of SprayMax 2K Urethane Clear coat. I was chasing after some heavy orange peel near a lip of the trim with 1500 grit (wet sand) and...