Quote Originally Posted by AjitN View Post
Even if right side door is not latching properly, it will give uneven density across width
I'm guessing this is the issue since this machine doesn't have a 2nd transfer retraction system. Taken from the manual

"In this machine, the 2nd transfer roller does not have a retraction mechanism, so that the transfer belt and 2nd transfer roller are pressed up against each other at all times."

Press in on the front side of the side door while in use, near where it latches and see if the issue goes away or improves. If so, the hook on the front that holds the door shut may be worn, damaged or broken.