One other thing that I have noticed with 20 ga. 1100s..........when my oldest grandson was about 9 or 10 he wanted to move up to a "twenty". I had my wife's LT 20, which had always worked fine. When my grandson tried to shoot it, it would not eject and feed. Jammed every time. I worked on it relentlessly, doing everything I could imagine to help it. When I would try it myself it would work flawlessly, but not for Jackson. Imagine, that when he got older and bulkier, it then went to working perfectly.
I can shoot it from the hip and it will not eject and feed. Hold it to my shoulder and it works perfectly. Even tho' it's a gas gun it needs some solid resistance behind it to function reliably.
SRH