Replaced the bearing. Got a pusher made for me and made a copper drift to home the outer seal and made a locking tool. Job was quite easy really, the outer race of the bearing had bad pitting. It all seems ok now although I am being a bit more gentle with it as I worry that the bad bearing might have caused a bit of disruption inside the gearbox. I have changed the tranny oil a couple of times and there doesn't seem to be any metal bits loose in there. I have just bought a SV1000s as I have lost faith in the Buell a bit. If a bearing like that (shouldn't be a ball bearing anyway) goes at 28 thou miles what are the state of the other internal components? I can't get rid of the Buell as it is just so good, handling and grunt but longevity I am not so sure about so I'll use the Suzuki as everyday ride until I decide what to do. Quite fancy a MT10.