Riveted spar, horn and root rib together and riveted top skin to spar. Attached counterbalance assembly and riveted to spar. Riveted bottom skin to spar and finished up the remainder of the riveting in the ribs and counterbalance assembly. Left aft rivets out on last 3 holes for working on apex wedge on trailing edge. Match drilled apex wedge, top skin and bottom skin.
I will need to dimple and countersink the trailing edge and wedge next session. I will wait to proseal the rudder trailing edge/wedge and both elevator trailing edges all at the same time.