My fourth Classic wood inlay arrived yesterday. Started my usual routine of sitting in front of the TV opening and closing it to smooth it up. The first 3 or 4 cycles were fine but now the locking bar is VERY hard to release. I've got strong hands and it take most of my thumb strength to release the lock. Never had this before on any Sebbie. Anyone else? I'm continuing to cycle it in the hope it will loosen up and if not, I'll tear it down and look for a burr. Yeah, I know, send it to CRK, but don't want to go through the shipping hassle or part with it for that long.