The only conditions I have observed that cause the lockup to decrease (and these have been surprisingly many) are the following:A very distant 3rd possibility that comes to mind is that the lockbar is fractured, or has been over extended such that the lockbar bias towards closure is reduced. I have never heard of this happening.
- The blade has been swapped. This is a no-no with the CRK folders -- the locks are custom fitted due to the high sensitivity to blade/lockbar dimensions.
- Debris (like pocket lint) has built up on the stop pin or the back of the blade, causing incomplete opening.
Another possibility is if you're not the original owner the previous owner pushed the lockbar back slightly. Some owners do that to make closing the Sebenza easier.