There is one other nasty thing that results from constantly recutting
player rolls from old warped or shrunken originals or unknown recuts
-- it is called additive errors.  Remember what a forth generation VHS
tape looked like?

Player rolls where one has a superb copy to use to run the perforator
is one thing.  But, as often happens you only have a roll that was
recut by someone and who knows what generation it really is.

I have tried to play copies of pipe organ rolls that were done in
someone's garage on the perforator that was definitely made on the
cheap side.  The tempo sounded like some drunken jazz band and no one
had the sheet music to start with.  Use only the best digital copy in
MIDI or MIDI-2 format to run the perforator.

Jim Crank