I use the 410 for most final fairing, but I often get pinholes from tiny bubbles. I now use Dolping Glaze, an automotive glaze specifically for such minor imperfections. It goes on real smooth, and sands effortlessly. It's a 2 part polyester, not epoxy, but I've not had any problems with it. And I'm getting great life and gloss out of high quality auto paints. Flight Risk's paint is now 7 years old, and it's still glossy everywhere I haven't scraped it off.
