1. After fitting the VS cap in place, I decided to make one final revision to its plug that will make it fit better alongside the VS plug. This involves adding about 3/32" of thick micro/flox/cabosil to the bottom of the plug (denoted by the blue line in the first photo below). After this cures, I will sand it to the blue line and the VS cap should be ready to mount.

2. Spent some time sanding, priming, re-sanding and re-priming the filled rivets in the rudder. [NO PHOTO].

3. Decided that I needed to remove even more material from the empennage fairing mold, in order to allow the layups to lay completely flush with the fuselage at the tape line. As more of the foam is sanded away, I'm adding bits of filler foam (visible in photos 2&3 below) to the voids that are being opened up in the mold.