Squared and level the right wing skeleton. Shimmed the main spar for zero twist using a combination of plumb bobs and music wire. Pictures show the structure to be 90 degrees between fore and aft tooling holes on the aft ribs. These were dead center but the picture makes it look just a hair off.
To level the spar. I used just a single piece of 0.025 scrap and any other layering was with duct tape. It is amazing how a single layer of tape could cause a very appreciable change in alignment.
