So, I have an AmSec safe. It is a little one, that replaced a gun cabinet. It is not our primary safe, in fact other than a few items it is used mainly for my wife's things. She complained that the lock was sticking.

After taking a look it became apparent that the bottom door bolt when unlocked was going in too far and catching on the lip on the way out. It was the only bolt that had this problem.

Here is a pic of it. You shouldn't see any of the inside:

Here is a pic of one of the other bolts, notice how everything is flush:

It was pretty easy to fix. I simply adjusted the 3 center bolts so that the bolt bar pushes the bottom bolt further out. I actually took it out to bend it outward, but it looks pretty straight.

Following is a picture of the inside of the firewall (about 12 screws hold it on). Notice the finger print marks. They are not from me, this is before I made any adjustments -- it came from the factory that way.
The circled area shows the bolts I had to loosen to adjust the bar.

Here is a pic of the bolt bar removed, circled are where the bolts hold it:

There you to. A little bit of tweaking and it is back in service (and locks again).