My PAPS X switch is stuck and won't turn to lock /unlock. Luckily it's stuck in the unlocked position so that I can still use the mod, I thought it might just be dirty and need a cleaning. When I took it apart there was a little bit of gunk in it. Figuring that was the issue, I cleaned it up and put it back together. Still stuck. Any ideas on what I need to do to get the locking mechanism working again?