I have a limited edition 1660TSW Kershaw Leek Random Task from 2006 that I EDC regularly. The knife has served me well for nearly 10 years, until recently when the torsion bar failed. I got a replacement torsion bar from Kershaw, and installed it after a thorough cleaning and lubrication. I reassembled the knife the same way that it came apart (also verified with on-line assembly photos), but the blade is no longer centered when closed. What has happened, and how do I fix it? Thanks!