After tightening the swivel fitting on my squeezer to stop a rather sizable air leak, I squeezed a few AN426AD4-5 rivets around the bottom and sides of the firewall.
I think Scott may have my rivet gauge. I'll call him tomorrow to see if he had it in his pocket when he left last night. If so, and he has it with him maybe we can meet up for lunch so I can get that puppy back. :-)