Sturdy claims that having these spoked handles located in the middle of the door "is the most impractical place to put the handle. It doesn't allow shaft support, so it has a high chance of the clutch getting loose and wobbleing. Clutches and shear pins are needed for this linkage design".
I don't see where the handle placement on any safe would really make much of a difference (assuming the boltwork design was sound). The most common handle placement would probably be level with, and left of the dial. I think gun safes are more prone to have them in the middle of the door for aesthetic puposes.
I sell plenty of safes, and these safes are all slightly different in design and apperance. I can't say any of these safes have had any more problems than another due to handle placement.
Sturdy goes on to say that their handle design is superior because there are allot less moving parts.
As a general rule, the fewer the parts, the fewer problems you will have.
They are so sure of their system, that the whole locking system is warranted for life to be free from defects.
Many gun safe manufacturers warranty their safes for life. This typically includes everything except the lock itself.
Also, does the dry light insulation in the AMSEC gun safes create any type of moisture issues that require a dehumidifier?
The insulation itself should no pose any issues as far as moisture is concerned.
Does the dry light degrade and lose it's intended purpose over time?
This is a great question. I'm surprised nobody has asked it before.
The answer is maybe. Some professionals think that it does, others think that it doesn't. To my knowledge, nobody has ever tested old material to see if it performs equally as well as new material.
In the commercial safe market, it's not uncommon to sell companies new fire rated safes to replace those that are several years old. This is based on the assumption that the older safes may not perform as well as the newer safes. However, as stated before, this has never been proven.
I've seen plenty of 100 year old safes do better in a fire than brand new safes.