I have a '78 NC-50. I am getting ready to ride it and figured I would exchange all the fluids before I consider it done. I pulled the oil injector tube to drain the oil tank and found that the oil tank was full of gas. It drained completely in a minute but continued to just trickle. I would assume that this is the result of the pin hold between the two parts of the tank. Now to my question. Will the Kreem stuff plug up a small pin hole for good?