I agree with DannyC, I also just got one and the lock up is tight, I've not experienced a problem with the lock. The opening of hte knife was rough, took it apart and smoothed out the bushings and knocked down some slag type stuff near where the threaded holes come through the liner, it raised up the bushing on one side, then applied some White Lightening and now opens very nicely. The blade takes a good edge and mine is the partial serrations type, at first I didn't want that one but since having it I like their serrations the best of all I've seen so far, done on the correct side, for right handed people, and cuts smoother.
I have noticed that the blade has gotten a few small chips in the edge, might be it's too hard? Wasn't abusing it or anything, just showed up, so I sharpended it and hasn't shown chips since then. Won't say how sharp it is, don't want to offend those with sensitive eyes, (but it does get very sharp), see thread in Custom Reviews about sayings on sharpness, funny stuff. I know how they feel, I hate cliche's like `well, we're all in the same boat so lets learn to row together' drives me crazy! or `Well, the moral of the story is.....' nuff said...
I like the knife overall and have been carrying it since I've gotten it.
Hope that helps,
It ain't those parts of the Bible that I can't understand that bother me,
it is the parts that I do understand.