I'm starting to build two aluminum gas tanks and wonder if there are things that I should be aware of before I install it? If I weld it thoroughly (which I will) it shouldn't leak. But should I seal it regardless? What would work as a sealer? I'm going to run baffles, and then weld the top on. Any HAMB'ers out there who've trodden this path that would like to pass on their wisdom? Thanks, Ryan PS. Here are pics of my progress so far. I've welded the sides, and the bottoms in. I've yet to weld in baffles, and cut holes for the sending unit, roll over valve, and pick up tube. I may also weld a bung at the bottom so I can drain it if I ever need to.