I was just mostly offended by the _attitude_ I encountered, by even contemplating changing the combination, when conversely this was touted as an advantage and/or great idea of the electronic locks.
Me: "Say, where is the change key for the lock that comes with the safe?" "We don't let the customer change the combination, it's for security reasons". Now, you're right - it's mostly to keep the customer from locking him or herself out!! Maybe that's my right too - to be stupid! But don't blow smoke.
Me: "Well, the combination can only be changed with the door open, how is that a security issue?" Well they might be good locksmiths, but their logic was pretty weak!
I expect that the owner/instruction manual provided with the lock explains the process adequately with the change key, suitable number choices, and namely verifying correct operation with the door open. What am I missing, that isn't available online via the .PDF at the S&G website? 'Jus sayin'.