Help with rear brake problem

[Squirralien]

Well,,,,,,, I have removed all the rear brakes and replaced them with the bias reversed and also checked the shoes to the drums and they look perfect,, but no change in the original problem,,,

I then decided to just sit there and fiddle with it like a little kid and in doing that discovered that the bar with the hook on each end A in my original picture was not holding the correct position being slightly too long, So I took them both off and increased the bends and tightened the hooks on each end and boooom there was connection from the adjuster to the locking plate.
I then noticed that the adjuster on the passenger side was also a drivers side adjuster so it was winding backward and not working as it should, I just happened to have kept the rusty ones and found the right one and wire wheeled it and polished it, greased the thread and put it in and all good, Job done,,
thank you all for your input/suggestions and hopefully someone might see this in the future and be able to sort the issue out. maybe the same problem or solution maybe a suggested solution but either way I hope it helps someone apart from just myself...
Thanks again Craig, Trev, Finny and SunnyTim

[Trev]

Thanks for sharing your problem and solution .