Good point, Mike. I threw that dope idea in without thinking hard enough, and I haven't done it with enamel, just Lacquer. The Polycrylic might be better for a base for that reason.
I use Lustrekote clear over enamel and if you don't dust it on lightly and dry 20 minutes between dustings, it will orange peel. And too much Lustrekote will spiderweb crackle over the years. But it's bulletproof to raw fuel. Always heat the Lustrekote very warm before spraying. And shake x 2... like 6 minutes. Those two things will eliminate spittle. It helps if your shop is 75-80 degrees too. It will blush in high humidity. I successfully de-blushed once with pure thinner.
I recommend clear L'kote on the fillets and forward of the LE for lifelong fuel protection, and optionally for looks, clear dope for the rest of the fuse and empennage. However with gloss enamel it's not really necessary. Wait until the Enamel gasses off for 10-15 days before spraying the clear. But I've done it sooner and the world didn't end.
For screw holes and other crevices(like control horn screws, engine screws, etc), I always use a brush or toothpick to soak them with Minwax Spar urethane. It's also bulletproof to all the fuel and solvents. And it dries overnight.
Rusty