Well today whist holding the clutch adjuster big screw part in my hand to prize off the old seal I managed to break off /damage the thin end of the wall where the seal sits.
I can't believe I was so clumsy - I should have set fire to it instead that would have worked - I had no idea how thin it is at the seal end.
Anyone have one to spare/sell?
Part number is 22841-266-000