Well the threads of the nut housed in the K frame were destroyed also. It happens when you're trying remove the "front" bolt, and the bolt cannot move forward because of the bushing sleeve, so the bolt chews up the threads. So I ended up putting a lock nut behind the welded nut. I used my rotozip and cut a access hole on the bottom of the frame so I could insert the lock nut. Torqued everything to 81 lbs and went on a test drive.