Ok, I need some more help with this issue! The ring won't stay where it belongs, so the top of the shield isn't secured at all, only at the mid point. So.. this morning I tried to loosen the ring by the screw, and it did get larger, but I could get the ring to come apart nor could I get it tight enough to stay on the hook behind the shield.
This is so friggin' frustrating. It seems so simple but I can't do it. Do those rings come apart or do I tighten it by turner the screw? And it's in such a tight spot that you can't really get in there...ugh.