Riveted rudder stops to the top lower rudder hinge. Clecoed the rear spar components together and began to rivet them together. Ran into a huge problem. I couldn't squeeze the 4-7 rivets with my hand squeezer! Just couldn't get the leverage required. Made one attempt at bucking and that didn't turn out so great either. Made the decision to order a pneumatic squeezer as much as I was didn't want to.