I can't understand (though I admit, I am of limited intelligence, especially after a few beers) why anyones' scews would be backing out on a Sebenza. I don't know how the Unum pivot is set up, since I don't have one as of yet, but in the instance of Sebenza's, when you apply enough torque on the Allen wrench such that it flexes everso slightly when tightening your screws, they ain't coming out!
On my first ever Sebenza, I made the mistake of applying blue Loc-Tite to the threads, having owned/carried a sloo of Benchmades, and thinking this was the way to go with all folders. I ended up using a soldering iron, applying heat to the screwheads, and getting them out, but it was still difficult, and I ended up boogering up my screwheads and ti slabs while trying every other method until I got to the soldering iron of addressing the problem.
I'm ALL for modding folders, Seb's included, but applying Teflon tape or Loc-Tite to the threads of the screws goes beyond "fixing what ain't broke," and enters the realm of a big potential pain in the butt!
The last thing I wanted to do was come across like an know-it-all threadhead, but I what I wanted to do was save people some truly unnecessary agony!
Professor.