Guy I have just checked and have the split alloy bearing but it is fine and not providing any issues so I think I will pass on any work here.

Guy, what were your car's symptoms before you decided to wind on a lot of castor? Do you now have good self centering, or just a little bit or none at all? Did you find you had a bump steer issue with so much castor? I assume by the name, bump steer means the steering is affected by bumps??