I sorted through the miscellaneous parts today and prepared then for riveting and prosealing. I made a stiffener for inboard and outboard rib. Drilled, deburred, scuffed up surfaces getting proseal. The tooling hole in the outboard tank rib needed sealing with an AN470AD5 rivet. I scrounged and found the only one in the whole inventory. I guess it was made for this job. Nearby there was a small damaged area that needed to be drilled through to fix. So, I will not only seal with the AD5 rivet, but also an AD3. Both will get proseal inside and out. The fuel tank was reassembled after I roughed up all rib flanges, tank skins, and end rib stiffeners,
