I have just got my crank cases back from SEP today and they have done a fantastic job. One outer main picked up and spun in the case, wearing a groove. I had it welded and machined by SEP. A lot of the "expert" repair shops told me to get another pair of cases, as it was to hard to do correctly. Fair play to SEP, they did it and I have done dry build and everything's ok. New crank from Norbo, so happy days. Job for the weekend: engine rebuild.