Yep,
That is the animal.
The cork is a little polished so I might give it a quick once over with the zinc sterate ( 320 dry ) paper ).
The cork is quite thick so there is plenty of drive left in it.
The centre of the drive plate (no 68 ) looks like there was once a compression spring around the central boss as it is quite rough and I am definately not the first person to go in there .
Never pulled one down before so I was a bit bemused that there is nothing to separate the plates when the cable is released.
Thanks for the diagram.
