Got the rivets from Van 's and finished setting the inboard rib-to-spar rivets. Completed riveting the skin-to rib rivets on both sides of the HS. Clecoed the rear spar into place and used the hand sqeezer to set the skin-to-spar rivets on the bottom side of the rear spar. Set the pop rivets attaching the rear spar to the inboard ribs. Also fasted the HS 911 center elevater hinge bearing assembly to the rear spar.