This session was about finishing up the installation of the stiffeners on the lower side of the left fuel tank. I've gotten the process down so I can get through these stiffeners much quicker now, even though I did have to drill out one whole stiffener due to the rivets not being set flush enough on my back riveting plate. I think I've found a better amount of tank sealant to aim for, which causes just enough squeeze-out and doesn't require a lot of extra post-processing work to apply more or redistribute excess.