I had had to wait for more rivets but they arrived and so I final-drilled the leading edge and then put a slight roll cread in the outer lap. Next I clecoed the leading edge back together and riveted the entire edge. There was still some pillowing in the center section, so I added rivets between the pre-punched rivets.
Rivet count: 0 (40 redo, 530 total redone) Total: 15921 - Plus 549 done at Van's