Finally some decent weather, so I skipped some sleep and knocked out that top rib ending problem.

This is what an airfoil matching the aileron looks like with some landscaping fabric to sub in:



And here's what it looks like "naked."



Note the large hole in the tarp behind the wing. That was a pinhole before the storms we had! I'm just amazed the whole thing is still there after 60 MPH gusts. I put another tarp on top of it; hopefully the old one will act like reinforcement for it.