Today the left skin was temporarily clecoed in place to make sure everything was copacetic before riveting the skin on. No issues were apparent, so the skin was removed; sealant was applied to the airframe, and the skin clecoed in every other hole.
Stainless steel, CCC-42 and CCC-44, rivets were applied where the skin is riveted to the steel framework, and aluminum rivets elsewhere. I was running short on CCC-44 rivets, so I left some of the clecos in place to reserve enough to start the right skin tomorrow. Additional CCC-44 are on order.