Continued work on the rudder. Finished dimpling the spar and ribs using the tight fit dimple plate on the tight spots. Also dimpled the counterbalance skin. Got the urge to rivet, so riveted the reinforcement plates and nut plates to the spar. Clecoed together the lower spar assembly, with plate, shim, rudder horn and lower rib. This one took several trips back to the drawings to make usre I had it right, and I decided to wait to rivet until I could look at it again with fresh eyes.