Today I match drilled all the ribs to the new front spar for the left side, then attached the skin, match drilled the skin to the replacement front spar and match drilled the new rib. At this point, I am where I screwed up the left side before. Let’s see if I can successfully drill the forward flange of the rear rib to the spar to the angle to the aft flange of the front/nose rib…

Looks pretty good to me. From here, I match drilled the skins to the rest of the skeleton and called it a day.