Researched the minimum distance between rivets and found we had plenty of space to add a rivet on either side of the figure 8 hole. Also found one hole in the upper J-channel that was oval, and decided to add rivets here, too. Used the rivet fan to evenly space the new rivets on either side of the pre-punched holes.
Stiil working to get all the holes to line up in the tail. DIs-assembled and tried to adjust the curve once more with the bending rig on the bench.