Prepping gas tank

I have been getting all of the parts to the gas tank ready for riveting/sealing. I have etched all the parts and cleaned them. I then give them a scour with the Scotch brite pad for mechanical adhesion. I have also fabbed up the nose pieces that reinforce the nose of the two outside ribs. I will start riveting the tank together in the next couple of days. I do small batches of pro-seal and just rivet together a couple of pieces at a time. That way I am not wasting pro-seal and I don't get it everywhere. I will post some pics when I get going on it. I also have to make a jig to rivet this all together in as well. I will use some 3/4" plywood and get it all lined up so there is no twist in the tank when your rivet is together.