I am certain that the mechanism is working as I have tried to engage the handbrake when in motion and can feel that the shoes are engaging properly. Everything has been overhauled and checked but even after all that the handbrake will not hold on a slight incline. It seems as if there is not enough leverage to expand the shoes against the drum no matter how hard you pull up the brake lever.
With the recent festive season just gone I am still getting your suggestion checked out and will revert in due course. I am certain your advise will work. Tks Jack