Pop rive the rear spar to the assembly containing the skins, stiffeners and shear plates. Also rivet the rear spar to the bottom rib including the rudder horn.
Continued riveting the top rib together along with the counterbalance rib. Riveted the top and counterbalance rib to the skins, minus the 12 rivets called out in the plans.
Complted riveting the skins to the spar. Had an issue drilling out one rivet. Sent a picture to Vans. Assume I will move to a -4 rivet for that hole.
