Reinstalled the rear spar & the ribs, the build manual has a couple of small errors regarding the holes in the rear spar that are to be left unriveted for the ribs, etc. It would pay to do a "dry fit" using clecos to confirm which ones to leave rather than rely on the diagams only, the rear spar extension, rib 4 & wing rear step rib 4 are affected. Photo 3 shows the small T.E. rib -205, both of these ribs (L & R) had the incorrect label affixed so I will need to deburr/alodine/prime this one. All pretty minor stuff really in the big scheme of things.