This was just a very brief session that started by pulling out the two rudder skins. The instructions calls for removing a narrow strip of excess material from each of them, so I used simple sheet metal shears to cut that and then smoothed off the edge with a file and scotchbrite pad.
The next step was to begin fitting the two ribs that are next to the lead counterweight inside the rudder. After clecoing the ribs and checking that they were already drilled to final size, I needed to prepare the lead weight itself to be eventually mounted. The supporting rib comes with only one of the two holes pre-drilled, so I had to use the lead weight to match drill the other hole in the rib. Both holes were final sized and then dimpled to allow a countersunk screw to go through the rib and the weight.