Thanks, Carl (Moonman), for your suggestions. As EML also mentioned, a jumper will be a quick fix so I'll try that first. I'm trying to do another trailing turnout in the south dogbone as well.
Adriatic, yes, I have a number of power lock-ons "strategically" placed around the layout and eventually will get them isolated.
Carl, yes progress has been made. I'll try to put up some pictures and videos in the old thread to give you an idea of how far I've come.
It's all still very much a work in progress with much masking tape covering exposed wires that I've not connected to my underside bus(ses). BUT, I can run trains, often 3 at a time, so even though it isn't scenic-ed and some would say I have way too much track I do get a kick out of running the trains and doing some little switching exercises with a train buddy. Moreover, with all the track I have I can park some "made-up" trains on sidings or in the yard and have them ready to run whenever I want without having to pull them down from wall mounted shelves. There are now 5 yard tracks along the sofa instead of the two in this video and the four in one of your last iterations of the RR track plan.
I'll include a video of the layout just before I took it up off the floor so as to get started on the benchwork. This floor track plan is pretty much what I have up on the benchwork but I'll put pix and videos of that on the other (old) thread.
Carl, and everyone, thanks for your help and support over the past few years. Cheers
PS The eerie blue light over part of the south dogbone area is not a spectral presence but from a weird track light on the ceiling (since replaced).