Frame riveting
Reassembled vstab and riveted spar / doublers and ribs together. Riveted upper rudder hinges to spar, but discovered that the parts kit I have had the wrong length lower hinge rivets (changed with assembly alert AA-188). Emailed Rans to get replacements.
Assembled and cleco'd side skins and leading edge skin. Straightened vstab to ~0.1 deg from top to bottom and drilled leading edge skin holes through side skins and front spar. Flipped over, checked straightness and drilled opposite side. Disassembled skins again and deburred all of the drilled holes. Reassembled skins for the last time and started to dry fit the rivets.