Yes I did, they suggested I try a different O ring, and if that doesn't work they suggested that I send it back to them. I went to Home Depot last night and got a bunch of O rings and tried one and noticed it helped significantly, but still is a bit tight. I'm not privy into sending a rifle out, so I'll probably just try a bit of polishing around that slot where the inner tube with that little knob sits and inserts in outer tube, specifically the outer tube itself, and see if I can't resolve the problem. BTW Henry was very pleasant to work with, and seemed generally concerned.
Note I was at Wal Mart the other day, and they had a .44Magnum on the shelf, so I asked to check it out. The first thing I tried to do was remove the inner tube, it to was extremely hard to remove. Perhaps I've got weak fingers, I'm beginning to wonder. Never had trouble with my tube fed .22LR's in lever action.