Today I riveted the counterbalance rib to the rudder spar. I then riveted the counterbalance skin to the counterbalance rib using the rivet gun, flush set and bucking bar. Once the skin was attached to the rib I installed the counterweight to the counterbalance rib with two #10 screws, washers and nuts. Once it was bolted together I used JB Weld to bond the nut and screw to ensure a forever bond.