This evening, I glued the last of the wingtip stiffeners into the left wingtip, then created the fillets ouf of thick micro. While they were curing, I did the same for the lower-side dowels in the right wingtip.
Next, I glassed-in the APRS mounting rails inside the right wingtip, and did some planning for the installation of the APRS GPS antenna and VHF J-pole antenna.
Finally, I sanded a bit more on the area of the right wingtip where I had profiled the wingtip to match the wing skin. Specifically, I sanded the joggle area so it looks just like the rest of the tip.