Old costco cannon executive vault safe with jammed lock. A little history, it's old 10 maybe 15 years. When I bought it within a week the key pad would not unlock it, Cannon had a tech come out and change the key pad from a 1 nine volt standard pad to a 2 battery s&g key pad and it worked fine. One day I was leaving home and open the safe to put something in before leaving It was actually stiff and a hard to turn the latch when I opened it, I should have known better but it was stiff to close and I was in a hurry so I forced It close. The key pad will not actuate the lock inside even with fresh batteries and initially got hot when I entered the combo. Nothing i have tried has opened it, Cannon sent me a new key pad but it is the old single battery that originally failed. Local lock and key guys are eager to take a crack at it but when press easily admit they may have to cut it open or it will cost an arm and a leg. Anything/suggestions to try before I cut a hole in the side take out all the guns remove the inside door panel, open the door and repair the safe. Thanks for any help. I am sure with all the budget safes out there someone has had this problem.