2001 4.3L Alpha one. Had the wood insert replaced in this aluminum deck boat spring a year ago. I have found several things since then that indicates the person who put it back together was a lazy *** moron. The next to the last discovery was the right rear motor mount had no nut on it. After installing a regular plated nylon locking nut and realigning the engine again, I then find a 1/2" aluminum nylon locking nut in the bilge. When I vacuumed out the bilge looking for the lost motor mount nut, all I found was a ground wire that probably goes under the nut that appeared yesterday. I understand that the bottom 2 Bolts/studs on the through transom assembly are aluminum. Is that where this nut belongs?