Well, I sure appreciate all of the help and advice so far, Roger. But this one got to me. I finally got a chance to rip out both of the feed-thru caps in this particular circuit and install new ones today, but the circuit-assembled short remains. So I've temporarily shelved the old girl. I'll probably put it back on the bench in April, when it again becomes too hot to go outside. While I admit, this is partially out of frustration, I also have an outdoor "honey-do list" a mile long, which cannot be addressed in the Summer heat. My body has a very low tolerance to temps above 80F. But thanks again for being there.