Started riveting the left flap leading edge skin and bottom skin to the spar. This is some of the most difficult riveting to date. The problem is getting good alignment on a bucking bar, blind (of course), in a confined space, with no good way to hold the bucking bar. In spite of that, the bottom looks better than the top. I think dialing the pressure down a bit is working better. I was using just a bit less than 40 PSI, but now it's down around 30. It takes a bit longer, but it seems to be more gentle on the surface.
