If, after the printer prints or feeds several labels, you notice that the media does not track down the center (moves from side to side) or if the sides of the media (liner, tag, paper, etc.) are frayed or damaged when exiting the printer, you may have to adjust the media guides. If this does not correct the problem, you can route the media over the two roll holding pins on the media guide. For thin media, you can place an empty roll core of the same width as the stack of fanfold media between the roll holders to provide additional support.