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I noticed on Dan’s site (3rd picture down on this page) a reference to some easy-to-miss flush rivets connecting the aileron bracket to wing rear spar. Sure enough, I didn’t countersink those holes. I messed around trying to countersink them, but it’s very difficult to get the countersink straight in there with the brackets assembled, even with the cage removed. I’ll need to find an extension or right-angle drill to do it correctly. I want to take care of it before I touch-up the primer on the brackets this weekend.
I also messed around with the flap braces. I never drilled them to the bottom skins, so I hauled out one bottom skin and clecoed things together. I need to think a bit about the best sequence here. I need to match drill the flap brace to bottom skin, match drill to the flap hinge (after aligning with the aileron), and then I think countersink the flap brace. Ideally, I would rivet on the flap brace somewhere in there. I noticed at least one other builder had to countersink the flap hinge. I’d rather countersink the flap brace, so I’m trying to figure out how to do that. I’ve looked in the instructions and plans, and don’t see any help for this area.