Smooth or not, I suggest you thoroughly rebuilt and lube the lock. They aren't very complicated, but older locks can wear in ways that fail locked. . . which is annoying.
Agree. If a modern mechanical lock will drop in, remove the old lock. I found that people were taking perfectly good, and new mechanical locks and replacing them with digital. After talking with several locksmiths, it is only a matter of time till the circuity of a digital lock fails. Ask one how many digital locks they replace each month, and the number of mechanical. It will be orders of magnitude higher for the digital. A good mechanical lock will last for decades of daily use.
I had the lock on this old Government safe fail.
the Government had put in a lock with delrin wheels and parts, apparently so the lock could not be X Rayed. As if that would prevent someone from opening the safe.
It took the locksmith maybe 20 minutes, start to finish, to drill the safe
I had the locksmith install a good safe lock I purchased on ebay
It is expensive to have someone open a safe with a failed lock. Also, the lock may not give a failure warning that you recognize. It is possible the problems I had opening the delrin lock were warning signs it was failing. But, I also mess up the pattern and am frequently off by a digit, and would have thought the reason the lock did not engage was due to my butterfingers again.