When I opened the box today, I set the new combination. Then I tried changing it by putting the new combination where the 0 0 0 had originally been. It did not work.

I then put the 0 0 0 in its original place, tried changing the combination again, and this time it did work.

I know it makes no sense, but that was the results. (It is also what the instructions say to do but I had presumed that they only meant to use the 0 0 0 the first time. My presumption was wrong.)