I noticed you use Mequiars Gold Class paste. I used the liquid version in the past and must say it works GREAT on black, but the durability isn't so good. When you done with the GC, step up to Griots "Best of Show" or their "Paint Sealant". This is coming from a guy who was 100% Mequiars from the time I was 18 to about 34, its that good. www.griotsgarage.com