Short session tonight. I had to install a hitch on our new truck, so I got to the rudder a little later than I had hoped. I clecoed and match drilled all of the stiffeners. Got everything removed and labeled as well.
On a separate note, my back riveting table was a little rough after the first coat of polyurethane. A quick and light sanding job did the trick and its smooth enough to use now. However, I do plan to repeat the process with urethane and sanding in the near future.