I purchased a brand new BLK/BLK PM2 about two weeks ago. I was flipping it a couple of minuets ago and just for the heck of it checked the lockup. And low and behold it has developed some forward to back play. The lockup was solid when it arrive and I have hardly done anything with the knife. I have another PM2 that have have had for about 6-8 months and the lockup is still solid. Is this something I could send into spyderco for warranty?