All the centre ribs have now been drilled in place and clecoed into the spars and the flap and aileron support frames are bolted in. I needed to enlarge the hole in the doubled root rib very slightly to fit the root-end flap support frame. The rib that sits adjacent to the aileron support frame also needed some resizing to facilitate the frame.
I am waiting for good weather to bead-blast and paint the wing steel parts.
