Back riveted the elevator ribs to the skins and back riveted the trim access plate doubler. Cleco'd the rear spar in place and riveted to each of the ribs and installed the clip angles. Realized that somewhere along the way I missed that the holes in the E-921 gussets were supposed to be upsized to #30. I did go back and confirm. Also missed the dimpling of the in board rib for the skins. Took care of both and carried on.

Bucked the top skin to rear spar rivets. There were a bit of a pain. Then flipped it over and cleco'd the bottom skin in place and used the special bucking bar to get the bottom skin rivets. Was a little apprehensive about these but they came out great. Did have to drill out a couple that were sitting a bit proud but they re-bucked no problem.