There is no liner on that end of the Military, the liners don't extend that far. As for the number of threads, as far as I can tell all Spyderco knives with liners have the screws tapped into the liners and it seems to work OK as long as you don't monkey with them too much. I always thought the easiest way to do a tip up mod would be to get a small piece of metal the same thickness as the liner, put it inside the scale on the bottom end, and drill and tap 3 holes in it. Then just unscrew the clip from one end and screw it onto the other end. But then I don't have all that much luck with taps and I'm not brave enough to try it with a tap that small.