Ok so i bought this 65hp merc had it clamped down and was testing it on the lake, i let me cousin drive for a min he turned and the whole outboard flew off, luckily we were able to save it and pull it up. It was atleast 5 feet in the water for about 2 min. What should i do to it now?? it still fires but dont want to run it unless i know somthing isnt gonna mess up.