Another puzzling question about a GFCI outlet--(PROBLEM FOUND)
A word of thanks and a followup on my question.
I had to try three GFCI recepticles before I got one that wouldn't trip!
More then likely these two that would trip must have been more sensitive and may work in a different circuit.
Interestingly, changing the outlet was the first thing I did. Didn't think two would do the same thing.
Another experience I can add to my notebook.