Hi to you all. I have seen this befor on a mates vr. It had knackerd one of the conrod bearings he put a whole new set in, and it just happend again. First of all if you replace bearings they have to be matched and have the crankshaft reground, this obviously means a full engine overhaul. In the end he just got another short block instead. Hope this helps someway even though this sounds like bad news.