I just bought a boat with a 1975 Sears Ted Williams 7.5 outboard #217.586110. The previous owner broke the fuel fitting and then threw it away. He can't remember where it goes and I looked all over this thing for the hole. The only thing I can find is a threaded hole under the fly wheel with a slotted brass fitting inside. All that I have is the plug that goes into gas tank with about a foot of 1/2" black gas line. Is this fuel fitting one the many impossible parts to find or can I get a substitute?