I just pulled out a favorite Christmas "O" roll and tried to play it
on my O-roll machine.  It just tracked "all over the place": up a key
step, then down -- really a mess.  As the roll frame doesn't have an
automatic tracking system, obviously the roll unevenly shifted in its
box, as the rolls are stored without flanges.

Does anyone have any suggestions as to how to remedy this, hopefully
a quick cure?

Thanks in advance, John McClure