I have found that clear lacquer & nitrate dope are about the same & are not glow fuel proof. They both work well with gasoline base fuels. The first two can be final coated with butyrate dope . Have never found it to yellow. A air less spray gun is truly airless in that no air comes out with the paint , the air runs a pump that forces the paint through a hose to the gun . Pretty much used for commercial jobs , for our limited uses it is too much trouble & expense. I like my stinky dope jobs that look like the real thing. MAX H.