It's a shame you're having problems with the Duplicolor on the Comet David. That would make a nice model in black. How 'bout wet sanding out the body then another clear like my go to Rustoleum Auto Clear Acrylic Lacquer. I very recently did that on a Chevelle build i'm in the process of and it came out just fine. In fact, I didn't even reclear it, just compounded and polished it out.Wasn't Duplicolor but it's worth a try.