Bert will probably slap me for this, but I am going to disagree with him about the short cycling. It seems to me that if the bolt has traveled rearward enough to pick up the next round out of the magazine it has probably gone far enough back to eject the spent round.

Personally, I would take a good look at the ejector and make sure it is functioning as it should.

Of course, I'm damn sure no gunsmith. :-)