I didn’t get all the way through the bracket modifications, but that’s okay because I’m moving on to riveting the center section bottom skin. Ashley from work was nice enough to give me a hand. To get started, we got the all the seat ribs clecoed to the skin. I think it helps a lot to have the side skins clecoed in place to give the structure some rigidity while riveting. 
Here’s the final product. We got nearly all the seat ribs riveted. Only 2 more to go!
