Some 16 months after I had ordered it and paid for it, I received my Gibbs CUDA MAXX 7" knife. That this is one monster of a knife, let me tell you! The blade is so huge that it has a mind of its own. It will not stay closed if I hold the knnife blade down and make any kind of a movement with it. I have treid to tighten the pivot screw, but it seems to turn in the nut and not to tighten anything. Is this normal? If so, God help the tip-up folks.