I am sure clear hose or tubing has come a long way in the last thirty
or so years.  I seem to remember that it breaks down in composition,
which oozes a sticky residue that really messes up a player piano.

Don Teach

 [ The plasticizing chemicals in the vinyl tubing of the 1950s oozed
 [ badly.  The tracker bar tubing on my piano became filled with dust
 [ which stuck to the residue.  It was terrible.  After that I gladly
 [ paid the extra cost for time-proven rubber tubing.  -- Robbie