So my safe's combination lock is starting to get sporadic in operation and opening. I pulled the inside door cover and the back of the lock off. No debris/broken parts inside and I did use a bit of graphite lock lube and it seems smoother and a bit more consistent.
Should I trust it or replace the lock?
Is the sporadic operation a harbringer of total failure in the future?
It is a Sargent and Greenleaf mechanical.



Thanks