Tonight was the night. I completed banging out my wing ribs! I'm quite pleased with my workmanship, and expect that things will fit together well. I even had the energy to spend an extra 30 minutes cutting the 115mm holes in the right wing ribs. As I've mentioned before, I use a fly cutter in my cordless drill and it works really well. I wouldn't consider doing it any other way (some of which I have tried and found very lacking). With an open schedule tomorrow, I expect I will be able to cut and flange all the lightening holes, then finally tweak all the ribs.