So I finally got a replacement head last week but not had a chance to get at it much lately. This head has a lot of crud on the valves which needs cleaning off. Took it to my local bike shop and got help getting the valves out. Just nead some elbow grease for the cleaning. Looks like this head came from an engine that had broken rings, valves have baked on carbon or somthing. Off on holiday soon so wont get much done til the middle of April.