Hi, Jaguar,
True, but that still leaves the anomaly of how a weak spring can result in failure of the bolt to lock back. The only thing I can think of is that with a weak spring the bolt may bounce so fast that it doesn't catch, but then the bolt would not unlock. I have looked at the manuals, and still remain confused.
I would like the OP to post a picture of the inside of the barrel extension so we can look at the ejector.
Jim
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