Interestingly, I went back to my Telecaster this morning which is where this started for me. My Tele has a sustainer humbucker in the neck and a standard Catswhisker T birdge pickup. I had played my Tele and then the Ricker-thang a few days ago which is what started this quest. It turns out that my Tele is all sorts of out of phase. So the neck pickup on my Ricker-thang is not actually full of magic, it is just actually wired correctly
Because I am not a guitarist I am not attuned to what "should" be happening. Every day is a school day.
As usual, thanks for humouring me.