Hey DEEZUL1 I sure do feel for you. Lost mine on a run to Augusta, GA last Monday night pulling a trailer. Called Standard Trans Tues morning and they shipped a new trans out that afternoon. Pulled the old one out Wed evening after driving home at 58 mph for 700 plus miles(what a drag) but it sure beats a tow. Pulled the rear cover off and spiked the nut an extra six times. It had two set screws in it and they had spiked it twice in the two shaft keyways. Hope this does the fix for I'm out of trans money, lost 5th twice last year and burned up a trans with a leak all in about 12k miles. I believe the other hands said if you are just replacing the nut you can torque it to 300 or so ft/lbs with red locktite and spike it about 8 times with a 3/16 punch all while it is on the truck. Careful when you replace the rear cover, make sure it is spotless before you silicone it. I didn't do this once and half my fluid seeped out on a long run and burned the whole innards up.