While riveting together the inboard aileron plates, I really messed up some rivets. I tried to drill them out, but the area is so tight the drill bit was not tracking true. Then I snapped a bit inside the piece. I tried to salvage, but in the end it was too critical an assembly. So I drilled out everything and ordered $51 in new parts. I think I saved the rear spar, though.
Quitting for the night. Will re-evaluate tomorrow.