I've had my Nova for three years, keep it clean. Recently it has been giving me alot of trouble. It seems that the firing pin is barely touching the primer. Leaving a small indentation and the shell will not go off. Other guys will put the same shell in their gun and it will shoot. To me it's a safety concern not to mention, I'm not getting shots off. Winchester, Federal and Remington shells, any ideas out there. I'm getting mad and ready to go to another brand.