Just a note about playing reproducing rolls on pumpers.  In the past I have
taped over the bottom two and top three holes on the tracker bar to play
Ampico rolls, but this summer when I was in London I observed a technique
that seems to work and you don't have to worry about adhesive from tape
gumming up your tracker bar.  If you tape a small piece of thin plastic
similar to that used for garbage bags on the flat area above the tracker bar
it can be flipped down to cover the holes when needed for playing a
reproducing roll.  When the roll is traveling forward the motion of the
paper keeps the plastic held over the holes. On reroll I suppose the plastic
gets dragged up out of the way.  Then when you want to play a standard
88-note roll, you just flip the plastic up out of the way.  In one instance,
I noticed that the operator had a box containing a mixture of 88-note rolls
and reproducing rolls and he could easily switch back and forth just by
flipping the plastic down over the holes or up onto the flat area above the
tracker bar.

Howard Wyman¶
hwyman@digital.net