With the plane at the hangar, there are only a few things I can work on at home. One is the wingtips, so I resumed fitting the wingtip lenses.
The flange widths around the lens varied fairly significantly (from 18-23 32nds), so I marked and filed the flange on the right wingtip to a consistent width.
I trimmed the lens approximately to shape and then sanded each side so that the edges are nice and straight. Once the lens fits on properly, I will apply some filler to the wingtip so that the gap is tight and uniform all the way around.