Have a Major Safe, probably 45 years old. Moved it from office to home.

Yes. Next time you get it unlocked, LEAVE IT UNLOCKED! (Yes, I'm shouting.) Contact a local locksmith who is a member of SAVTA to service it. It's several orders of magnitude easier for the locksmith and cheaper for the customer to repair a malfunctioning safe when it's unlocked.

This link should help you find a reputable sefe technician.

Very easy to service this safe. Your local locksmith should be able to help. And they DON'T have to be a member of any national association like SAVTA to service your safe.

Except "your local locksmith" as found on a web search is often a scammer who drills out Kwiksets, or maybe someone whose skills are limited to prying car doors open to push the button. Your mileage may vary considerably.

Indeed, your old-school brick-and-mortar locksmith who has been in business for more than a decade and has done at least a minimal amount of safe work can likely handle it, but the original poster is more than likely to run into someone not competent by using Google to find a "local locksmith".

And, your local old-school locksmith who has been in business for more than a decade and has done at least a minimal amount of safe work is likely to be a member of ALOA and probably SAVTA. You're not going to pay a substantial premium between a bonafide competent local locksmith familiar with safe work and one who cares enough about the trade to be a member of a professional association.

To put it another way, hiring a SAVTA member locksmith pretty much assures that the safe will be properly serviced and good for at least a couple more decades of trouble-free operation. Hiring a "local locksmith" from a web search is pretty much a crapshoot and you may wind up with an unservicable or destroyed safe.