I noticed some action flex when playing with the rear action screw. I had not taken the tang area down enough, so I gently sanded it with a longer piece of the same diameter pipe until I achieved a perfect mating surface. I re-assembled the gun, set the front screw at 40# and the rear at 36#, while keeping my finger on the end of the tang as I was torquing. No flex. I shot a quick three shot group at 1/2" while testing different chrony panels (IR). I think this is the ticket. I am waiting on more ammo, as well as dies and ELD-Xs to confirm.