Guys I really like the way this gun has worked out for me, but the last time at the range it failed to eject a empty case and I needed to use the cleaning rod to remove the spent shell. The shell wasn't jammed and fell out with just a tap. So when I got home I cleaned the gun thinking maybe the chamber was dirty, but tonight the same thing happened. I've been using Butches Bore shine, to clean the barrel but now I'm wondering if its carbon build up? The barrel sure looked clean, and I don't think its a issue with the ejectors. Can anyone recommend a solvent that removes carbon. Or maybe someone here has had this issue and can steer me in the direction of a quick fix? The gun has been issue free until the last 2 times out, but I need reliability every time not sometimes. Any ideas on what it might be??