Rivet rudder skins to spar flange, except for 2 counterbalance rib holes. From middle to ends, alternating. Riveted 1/3 of rivets on one side then turned rudder over and riveted 1/3 of rivets. Turned rudder over, riveted 1/3 of rivets. Turned rudder over, riveted 1/3 of rivets. Turned rudder over, riveted remaing rivets. Turned rudder over, riveted remaing rivets. All rivets were started in the middle and alternated to ends.
Clecoed counterbalance rib in position.
Riveted counterbalance rib to spar web, flange and skins.
