Have a Phaser 850 with several error codes relating to media jam it apparently enjoys. 22,506.06; 22,613.05; 22,508.10; 22,400.08. Paper usually stops barely out of the drawer just to the first flag and it is usually askew there with the right corner higher than the rest of the paper. Sometimes it gets a little higher and actually starting to go into the preheater. Have tried replacing the Upper feed roller clutch as that is all I had on hand, but it did no good. The tray has been replaced by the end user because the previous one was broken. All rollers have been cleaned. Any other helpful hints would be appreciated! Thanks in advance!