Here is the deal. I have two of these. One plain edge and one P/S edge. The p.s. edged one-the liner hit way over to the right. The plain dead nuts just left of center. Switched the blades around, you know one to another and voila. Perfect lock up for both. Switched them back and the same thing. Liner way over to the right. Switched them back and again dead nuts lockup the way they both should be. Any idea as to why? Keep'em sharp