I tried setting a few of the F-707 bulkhead rivets solo, but my reach was an inch or two short for good control. I recruited Karen again, and we knocked out the last rivets in the aft fuselage in short order. I then clecoed the elevator bellcrank rib and F-706 bulkhead in place. I know the F-706 bulkhead doesn't get riveted now, and the instructions don't mention the bellcrank rib one way or the other, so I'm going to wait.