New here, got a Boker 67 for xmas from the wife. Love the looks and feel of it, but got a bit of blade play, side to side, up and down, and blade became off center after opening it daily for fun 20x a day for three weeks. I was about to contact Boker about warranty when I decided to do some research and found what I am reading here about the stop pin etc... I decided to tighten the pivot screw a hare to see if this would work, and that did the trick , but , the blade became tight. I backed off just a hare and the blade play is gone and the blade is just about centered, never was completely centered out of the box. It is now just about April and I still flick it open multiple times a day, EDC it every once in a while, I force myself to use it, can't let myself get into safe queens, it is buttery smooth, still sharp and my only complaint it that the lock is a little sticky to disengage from time to time.