If your blind nut is stripped completely and it's a 6-32 just go to the local hardware store and pick up a 8-32 tap and re-tap the nut to the next larger size. It works great! Odds are it's already a 8-32 so you'd want a 10-32. Just take one of the mount screws with you and tell the guy you want the next size up. Good luck and don't feel embarrassed. I work with professional toolmakers and they do a lot worse at times. BTY is the "He Needed Killing" defense still good in Texas??? LOL