I was talking to a person that has a pretty nice airbrushed car and has been told that the air brush work should have been sprayed with an "adhesive" before the clear was applied. I haven't heard of this before. Can anyone explain this to me please ? In the old days..70's there was nothing like this. You just scuffed, airbrushed and cleared it. I can imagine acrylic lacquer clear just absorbed the dry airbrush and stuck. But the new 2-pac stuff doesn't. . .just a guess.