Update – So I moved the fork up again, opened it out a fraction to make sure the rod had enough room for the side to side movement, got it in beat and…….ITS RUNNING!
But it is now gaining around 20 mins in 4 hours so it looks like I will be putting the .0045 spring in there. It was a good exercise, I now know how much difference .0010 can make on timekeeping and I understand the set-up on these clocks much better than I did.
Thanks for all the help with this one.
Once the new spring is in I will update.
Paul.