I recently bought a henry 17hmr in the golden boy, it is one of the best looking, straighest shooting, and smoothest working guns i've used, but it does have a annoying problem. About every ten shots or so, the casing will become stuck in the chamber, and the ejector hook will slip over it. I checked the hook, it's sharp and seems to be working well. I've cleaned and oiled the heck out of it, which helps a little bit, but the problem still persists. Anyone similar experience? Help?