Chad clearly distinguishes between
autopsy and
physical. He has stated that he does not reuse gas keys. I do not believe he is replacing gas keys on every carrier that gets a reverse torque test as part of the physical. He uses a Wheeler's F.A.T. wrench at 30 inch-pounds.
https://youtu.be/nQWGQuLyUCU?t=1035
If this is correct the fasteners should require at least 55 inch-pounds to break the staking. Perhaps 30 is not enough to loosen properly fastened gas key screws, but it is enough to detect sheared ones?
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