As I said I managed to machine to the inside of the offset to accept a needle thrust bearing and then realised that there would be no support at that end so I inserted a sintered bush and reamed to size on the outside a normal ball thrust could be used as there is more room.
There were several momenst during the whole thing where I thought I had taken on more than I could do with my limited skill set. I also ended up with several bearing revisions as the whole thing was designed from bad idea to bad idea, if I had to do it again I would just buy a Arc euro(John S) finished one!

Peter