Good Morning, I have a 2004 sea ray 34' with twin 8.1"s, I'm having a problem with my starboard prop shaft prop nuts oxidation. had the props reconditioned about 3 months ago and nuts replaced. My diver cleans the bottom every month and said there is oxidation on the nuts and going to the props. He suggested we might have residual current going through the prop shaft and should have it looked at.