I received the new set of rivets from Perry at The Airplane Factory in Torrance, CA and was able to continue putting the ribs together.
I also worked on trimming the flange to better fit the bottom rib of the rudder. No more interference!
I'm starting to skin both parts and check if there are any alignment issues, so far so good!
Now I'm going to break out the soldering iron and connect the wires to the Anti-Collision/Beacon light on the rudder. I went with the Aveo Engineering Minimax Ariel.
Since this is a permanent connection, I'll be using heat shrink sleeves to protect the connections.
I will also be installing the VOR antenna in the Vertical Stabilizer. I see the manual recommends that you don't install both due to possible interference, but with the low voltage of modern LED's I don't see that being an issue. I also see that Phillip went the same route with his Sling TSi build.