100 new (0.040") clips ordered. As an experiment to see what the problem was, I did sand down one of the one I have, reducing it to 0.043-0.045" or so. Did a good job of removing my fingerprints in the process too! Ouch! But, the good news is that that one thinner one seems to work just fine. SO, it is just a case of the Old Sarge's clips being too thick for my gun. I'll probably contact them about a return and just eat the "restocking fee" and shipping charges. Oh, well, live and learn.
Thanks to all that offered advice and input.
Thanks to all that offered advice and input.