My Kershaw ti junkyard dog 2 has always been really smooth opening, one of my smoothest. Today I took it out and it felt REALLY rough and "grainy" when opening and closing. I took it all apart, thinking there must be sand somewhere, and cleaned with comet and hot water, being sure to get all the comet out of the steel. Put it back together, oiled with pure silicon oil, and It was even MORE rough then before. The only thing I can think of is the fact that when I had it open, I noticed the ball bearing in the lock bar appeared to be like "flattend" instead of round. COuld this be the reason for this rough feeling? Where can I get a replacement?