Dear Alistair,
Thank you the adjuster arrived today and is now fitted. I cleaned it up a little and fitted it , works perfectly and since I should only need to adjust the clock twice a year, it is good enough. Actually it is far, far better than that, I am really chuffed to have restored the clock, a small tick in the right direction. Thank you Alistair.
Bernie, thank you for your offer, I am sorted but grateful for the generosity of the offer
Regards Jack