i have a whites mxt pro with a 12 by 15 inch loop, i cant keep the loop steady so i put on a loop support, the whites 3/8 by 1 1/2 inch bolt just gives me a couple of threads to secure the loop support the rod and loop. i was told that garretts water machines use a 3/8 by 2 inch nylon bolt. i wondering if anyone might know the measurements on the nut and bolt used on garrett water machines. thanks.