After careful analysis, and some parts swapping between the faulty DWM 1917, and my 1937 S/42, it looks like it has something to do with the side plate assembly, and most likely the side plate bar.
It seems that it is a "seer disconnector" problem. Whereas if I keep the trigger pulled back while cycling the action, it does NOT click when I let up on the trigger and return to a cocked state. It just lets up, silently, and the pistol remains in a fired state. The side plate on the 1917 appears to be an aftermarket assembly of unknown type with a cast lever (seem visable down center axis), but otherwise looks to be close to original in apperance.
If I drop my S/42's sideplate in there, it works like gang-busters. However, this won't work as a permanent fix for obvious reasons.
Any suggestions?
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