I cleaned rivet holes and dimples with a sharpened popsicle stick and wiped down the area with MEK.
Frances came out to help. We worked together to dab sealant in each rivet hole for a stiffener, install the rivets with tweezers, then apply rivet tape. We'd then flip the skin rivets down and I would back rivet the stiffener using the C-frame. Repeated this process for all stiffeners. Inspected all rivets, then used excess sealant to begin sealing shop heads.