by GWiens2001 » 19 Oct 2021 20:27
It can be caused by several things. One, mikeinflorida touched on is psychological. Another is when picking wears the pins into deformed shapes. Another is dirt/debris in the lock. Another is lack of lube. Another is a tendency to increase tension on the tension wrench the more times you unsuccessfully try the lock in a single session.
Gordon
Just when you finally think you have learned it all, that is when you learn that you don't know anything yet.