Rear Spar Progressing Well

Made good progress on the stab rear spar today and sorted out my squeezer issues. The VAF Forum has some good threads from bulders with similiar issues. I think the biggest problem was a fair amount of yoke play when using the 3/8" quick release yoke pins supplied by Cleaveland. They're handy for changing yokes quickly but allow the yoke to move when the ram is squeezing the rivet. A quick trip to Ace Harware for appropriate nuts and bolts and now the yoke is locked in tight with zero movement. I also took the polish off the flat squeezing dies by sliding them across my garage floor so they don't slip so much on the rivet during squeezing. I also looked at whether the rivet call outs were too long for the application. I did the math (so thankful for my recently purchased digital caliper!) which is material thickness to be riveted + 1.5 times the rivet diameter and found the callouts to be spot on. I set up a bunch of practice rivets in scrap and discovered that trigger control plays a big part in shop head quality on 1/8" rivets. By feathering the trigger and have the ram move slowly to the rivet tip, then slightly increasing trigger pressure and slowly squeezing the rivet while gripping the squeezer square and securely I was able to get consistent, repeatable and excellent results. Having the work piece clamped securely is also critical. That issue solved I riveted the spar doubler, hinge brackets and center flange brackets after priming them all first. Was very pleased with all the shop heads. I also scuffed the white power coat on the hinge brackets per the plans for painting later. The center hinge bracket is attached with AN-3 bolts that need to be torqued to 20-25 in/lbs which is a pretty low value. Could find no in/lbs torque wrench locally that went to those low values. So I bought a click style torque wrench off Amazon with a 10-150 in/lbs range which will let me torque bolts up to AN-5 size. I also purchased a small magnifying lens which I've wished I had at times to closely inspect work.