took the boat out yesterday (1992 maxum scr2300) after i got back home i came out to find my outdrive leaking a few drops out of a hole on the port side (the hole was casted into the lower unit not broke by a part coming through it) right below the cavitation plate ! is this a seal that's failed on the upper end or on the lower end ? the oil is not milky so i don't think water has gotten into it. any help will be greatly appreciated !