I'm looking at a 1980 grady white 240 offshore. It comes with a new(ish) engine and trailer. Of course, I'm going to get a mechanic to look at the engine and maybe a survey. The price is good. The gel goat is chalky and there is some pitting in the anti fouling paint. My questions: anyone have experience with these boats, your comments and when is a boat too old? Also, is fuel tank corrosion a problem with these boats? What other issues do these boats have? Thanks