Pulled the head off of my '77 2F due to a blown HG. Took the head into the shop to have it cleaned up and valves done. They said the casting has some cracks in it. Pretty small but cracks none the less. Is this something that can be repaired? Guessing I"ll need to find a cylinder head that's in better shape. I'll be posting a "wanted" ad on the classifieds section but any other ideas would be greatly appreciated. I'm in the Twin Cities area if that helps. Thanks.