Congratulations to the two of you for figuring this out, and I now agree with you. Such a hard slog. I hope Averil is eventually able to see the logic too, as I'm sure she will.
I'd like to see a revised summary placed somewhere in a new thread, so we can retire this one. It's impossible to find anything now in this thread, and it's full of erroneous information that would totally confuse anybody venturing into it.