I also began to fit the center rear Brace. I'm running low on Cleco's...borrowing some for other location where I have them in every other hole. I'll need to study ahead in the construction manual to see how much more I need to install before I dis-assemble and rivet some of this work together and reclaim my cleco's for work beyond this. I have 200 A3's, 300 A4's and 5's and the 3's and 4's are all in place in the fuse. Half of the 5's are too.