Sorry about the derogatory term, but I've never been impressed with the quiver. Yes, Mr. Bear and many others used them with success...and glad it worked for them.
I have found I had to glue a pad on the side/back of the hood to keep it from touching the riser and spring arm. Next, I wrapped moleskin or a small diameter split soft rubber hose around the wire arm that crosses the frame. Next, I took the bottom gripper plates apart and squirted Shoe-Goo or silicone onto the plates and screwed them back together.
The screws only have about two threads and they can strip easily. Obviously one has to insure the mounting bolt and adapter are snug.
Excuse me, but one should not have to do this to a well-designed bow quiver.
If you like it, then great...and it is vintage equipment to go with an older Bear.
IMO, modern quivers are superior, and if this one was so great, everyone would like'em, have one, and use'em.