I have owned a Phaser 6510 for about 30 minutes. The paper does not feed entirely through the top. It gets about 7/8's of the way and stops. If I am present to pull it through, it does not report a jamming error. If I am not there, it reports that the printer is jammed. I have not printed one letter sized piece of paper properly tonight. Any thoughts? There is no paper mismatch.