I use a chap called Gary Bowden of Bowden Auto Engineering, Redfield Road, Patchway, Bristol. BS34 6PJ Telephone: 0117 9693355. He is very good with classic motorcycles and will just grind the crank journal until it is fit to use rather than take it down in 10 thou steps. He then reams the bush to fit. He would need the crank and cases.