This is my latest plea for help,and this time concerns the electric impulse clock in my P2. When I bought ihe car the original clock appeared to be dead.Having taken it apart

potentiall springs all over the place I know, but sometimes I can't resist - I found it would work for a few seconds when setting the hands,and slowly come to a standstill. I cleaned and moved the contacts as described in the workshop manual , and still no success. I managed to pick a second,much shabbier looking clock, also a non runner , cleaned it as before and hey presto ! away it went.It ran happily all summer,but has now also given up the ghost.
Does the small coil in there lose it's efficiency at all, can it be replaced ? The original clock was with a repairer for 6 months and he couldn't sort it out.
The original clock is still dismantled an I would be happy to post it to anyone who can repair it - that is at a non eye watering cost
Look forward to your replies,
David.