I have read before that you can tighten down the pivot screw on a Sebenza, and the blade will still open smoothly, something other knives will not do.
Last week I purchased my first Sebenza, a Large Regular. I have been opening and closing it a lot, and was pleased that the action was smoothing out, but last night I looked at the knife and the pivot screw was nearly all the way out. I fully tightened it, not excessively, and the knife was very stiff. I had to loosen the pivot screw a bit to get the knife to open.
Between this screw, the dull edge, and the resistance to opening I am going back to my Benchmade 710. I am VERY disappointed in the Sebenza.