I drilled out a series of AD3 rivets from the # 8 bulkhead and fabricated a tapered thickness shim to take up the slack and remove the skin dimple. I was worried that I didn't have any 10 thou alclad, but it took100 thou to push out the dimple! There's another small dimple in the #9 bulkhead, but that can be pressed out I think. Tony and I will rivet this in place sometime in the next few days.