Continued riveting the bottom of the tank in a couple of sessions. Put rivets in every third hole on the other four ribs and filled in rivets on center rib with first batch of sealant, working leading edge to trailing edge. Filled in three more ribs in second session. Sealed some shop heads inside tank with excess sealant on both sessions. I could not reach the two rivets closest to leading edge by myself, plus the cradle was in the way . These will have to be done with a partner and on the bench.
