Rudder completed for now!
I've riveted the two skins on as much as I can for now until inspection, and made sure it fits with the VS well enough. It's a very quick test, but all looks well. I was especially curious about the spacing between the rudder and the VS up top, where the VOR antenna screws are. I may also add grounding screws for the lighting around there ... lots of room! Satisfying day :)