RE: need a correct answer about fuel proof paint.
I just finished testing a panel of the Nelson paint with some 25% nitro fuel. This was two coats of clear over four coats of color (all with cross-linker) over the Nelson iron-on fabric. It was allowed to dry for two weeks. (Got busy and didn't get back to it!) I let the fuel sit until the alcohol evaporated (about 15 minutes) and wiped it off. The fuel caused a slight swelling of the paint. It rose just enough to be visible where the fuel had sat. Over the last 48 hours, the paint has settled back to its original condition. If you know where to look, you can see the tiniest mark. I never saw a reaction quite like that before. But I think it will be fine for my use, which rarely exceeds 10% nitro.
Another plus is that it looks like it will be pretty easy to get a nice finish with it. I have a wing covered with the fabric and after 3 coats of clear applied with a foam brush, you have to look to tell that it's not sprayed. Interesting enough that I'll be getting some more to work with.