i am pretty new to the world of knives and loving it. i have several spydercos/benchmades. but on my tenacious(edc) my pivot screw keeps coming loose after a bit of playng with the knife, the blade starts to hang right of center. i have contacted spyderco and have been told to put loctite on the screw. i am willing to do so, but was wondering if anyone else has had this issue?