Having removed my rear blingy spinners, it's clear that they are repros. Apart from the thicker direction arrow, they are much heavier than the originals.
Anyway, I have removed the rear wheels and thoroughly soaked the spokes, greased the UJ's and hubs, moved the UJ shields slightly inboard & refitted the wheels with original spinners. And lo and behold, all of my extraneous rear end noise has disappeared. I'm certain that the once per revolution rubbery squeak from the N/S was coming from one of the UJ bearing cap oil seals. Hopefully, my rear end noise will not return when I refit my blingy spinners, but if it does, I'll be able to point a finger straight away.
I've also installed a wire feeding power directly from fuse 7 to my 123 distributor which has fortunately cured my [at times] very fidgety tacho.
