All that needed to be done for this plans page was to trim the aft end of aft rib -01R. Trimmed 1/4" off the aft end to allow the rib to mount to the aft spar, which has the attach plate on the forward side of the right spar. Fabricated new attach angle to replace the one to be cut off. Positioned angle, drilled and cleco'd
Once the angle was in place, I had to drill new holes to allow it to mount to the aft spar.
Used the trimmed-off piece (which had the factory attach holes in it) to serve as a template for the new holes. Was able to hold the cut-off piece for the first hole. Cleco'd that into place, then was able to drill the remaining holes.
Mounted all aft ribs to the right spar.
Used washers to space the trimmed portion to allow attach hole location.
