I received a large 31 last week and love the knife. However, I've had both the pivot screw and the top body screw back out on me several times. This is after I've broken down and re-assembled twice and I've been cranking down on the screws where it's cinching to the titanium just like every other Sebenza but they still keep backing out. Is anyone else having this problem? And this might be blasphemy, but is it time to start locktiting screws on a Sebenza?