I have a old, of course its old, they havent made em in years 11-48 blowback autoloading shotgun. It has been sitting around for quite a while. I took it out the other day to shoot it, it will not cycle rounds from the magazine to the chamber and once fired it doesnt eject the empties. Before it was put away it worked fine, not everytime but good enough to shoot clays. I am just wondering if it may just be a cleaning issue, strip it down and clean it or should it go to the gunsmith?