Good News -- at least in my opinion. Talked to the store today, they are going to smith it for me. I say good news because I really wanted a gun for my kid that would break down and fit in my good lock case. I am confident that they can fix the problem. By the way, as I have looked at it more, I would say it is definately moving less that 1/64. You can only verify it by putting your thumb on the top rib where it meets the receiver.