Hey my buddy bought a new Beretta 92FS about a year ago. Long story short he moved it hung around in storage for about a year. We finally took it out to shoot for the first time. We had about 200 rounds to fire through it. 2 boxes of federal, 2 boxes of Remington umc. Well basically the gun started out strong, but 40 rounds in it started to fail to eject the shells. Then it started to fail to feed the next shell. Then after about 150 rounds... it started to fire one round then not cycle the next, causing us to manually rack the slide. Any thoughts? ps. We were using two factory magazines, both had the problems.