The dealer sells the replacement inserts. They cost about $25.00 for the whole set.
They just pop in where the old ones fell out. I still have some left over in case others
fall in the abyss.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….