I am busy reassembling a BSA Goldstar 1953 B33 I am in South africa and having difficulty confirming the correct bearing sizes for the Magneto. The magneto body has a plate inscribed m01l 46043b ac52 1 56 <----<<<< Any help would be greatly appreciated. Update: Ok several hours on the net and I found this site http://www.magneto.co.uk/ where at least I could confirm correct bearing sizes. TG they are pretty standard and available here. Next thing to resolve is the insulating cup/washers, does anyone know if they can be made form gasket paper or is some special material required?