RE: Fuel proofing help!
I am also a big fan of KlassKote, in my opinion, the best compromise in cost and performance of any of the model paints. However, it will not adhere to Butyrate dope. Two reasons I like it so well is that is that you can brush it on without leaving brush strokes and it covers so very well. Of course it's very good and durable finish is also a plus.