Here we go again! Same story, different tank - scuff, clean, and start with the goop. Having one tank under my belt (although not leak tested yet) definitely made this go faster. I back riveted the stiffeners and fuel tank filler flange and squeezed the rivets on the drain.
The fuel filler was the last piece I riveted on, and of course I only had enough proseal left to do half of it. So I mixed up a small batch that turned out not to be so small. This is what the sealing looks like when you have leftover proseal. I figure it doesn't seal much sitting in the trash, so why not make use of it. Not like adding extra on the fuel filler should matter much. If you have a leak here, you might be putting in a tad much fuel!
A lot of proseal on the inside, but nice and clean on the outside.