I took all my remaining OEM exhaust nuts off and gave them away. Bought one star washer and 2 stainless nuts for each stud. Put on the star washer against the exhaust flange and one SS nut behind that. Torque the first nut to 7 ft/lbs (84 in/lbs), then use an open end wrench to hold that torque value while tightening the lock nut. Run it a while and re-torque using the same procedure. Double nutting has long been a recognized procedure for keeping things in place. Have lost no exhaust nuts and no exhaust leeks after using the lock nut procedure...JTL
