The test pieces I experimented with for the middle deck riveting turned out great, so decided to rivet the middle deck. It went fine until the squeezer decided to lock up and do a death grip on my fuselage. It has always been a little slow to retract (20 seconds) so I should have known better than continue using it. Well, tonight I got punished, I now have a squeezer permanently installed on mu longeron. I supported it with boxes and towel just in case it would let go later on during the night. I have to find a way to remove it.