OK, took the sideplate off again, and I have to realize that Lugers only go together ONE way.
The trigger lever has two unequal sides, the shorter side goes into the frame.
The locking wire has two different lengths, the LONGER side has to be in the sideplate for a "snap" to occur, and this snap is resulting from thr wire pressing against the case, not by snapping into some detent on the "floor" of the sideplate.
Here are the pix of what I have, which near as I can figger is the correct orientation of all the fiddly-bits.
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