I just bought a 33 Auburn 8-105 and the Lycoming straight 8 engine was rebuilt last year. The rear water jacket is leaking Into Oil (3 very small pin holes) and I am looking for the closed shop to Nashville TN that still works and repairs cast iron blocks. I have heard there is a spay welding technique that can be used to add more material and I am also interested in checking out the entire block to make sure thee are no other thin areas while it is apart. Fortunately it is in a water jacket and