Pulled out the side skins but decided that I needed help to make the bends so I put them aside and started on the bottom. Polished the edges of all the parts. Joggled the required stringers. The center stringers KPFU461 need to be joggled at the front where they attach to the center section. Somehow the way the figure is layed out it took me a while to figure this out. There is an extra hole in the top of the stringer to indicate where the joggle goes. I had to make a new joggle tool which is longer to get a satisfactory joggle. Clecoed all the parts together.