Today I buffed a Black 1970 Charger for a customer of mine. The paint was in decent shape with car wash scratches, and swirl marks from the previous person who buffed it. I buffed it at 1500 rpm with a 3M foam polishing pad 05725 and Meguiars swirl X. It removed all the light car wash scratches, but the swirl marks would not go away. I've used this buffing technique before on other black cars and they always turn out great. What was different about this car? Could it be the paint is really soft and swirls easy? Any help is appreciated....Thanks!