Some guys use clear nail polish and I've heard that works well. I have used thin CA, which works, but is very easy to make a mess of it. I have also used clear Top-Flite spray paint, but it dulls the shine of the surrounding covering. And lastly, I have covered the entire area with a layer of clear Monokote. This also works, but it shows, and you get little bubbles, etc...

If somebody knows a perfect way to keep stripes down, I hope they reply here...