Hi All,  At the risk of being labeled a wise-guy, the advice I give my
customers is "Play lots of rolls".  I do not encourage cleaning the
tracker bar since every time it's cleaned, more metal is removed.  And
since the metal between the note holes is so thin to begin with,
regular cleaning might wear down the 'spacers' causing extra notes to
play.

One technicians thought,

John A. Tuttle