I bought this knife new from a member here. It is the 3.5 inch variant. The question I have is the the knife sometimes fly's open and other times it won't flip. If I blow in the pivot area it goes away for a little while but still comes back eventually. It feels like a bearings are almost scraping instead of gliding smoothly. It is a very rough feeling. What is the best way to solve this? Will it just go away after breaking the knife in? Also there is some slight vertical blade movement. But the knife is solid side to side wise. Will the vertical go away after break in as well? Other than that the knife is wonderful and super sharp.