Quoted from Nuclear_Waste:My KISS pinballs after 10 games. They are sitting on a white cloth-- all black spots you see are black rubbery scuffs from the disc.
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Oddly enough, I saw the black streaks on the balls from the spinning disc on the Kiss I played in Minneapolis, but not yet on the one in Madison. Possibly because Hilton and the crew changed out the balls to a higher quality? I would suspect the one in Minnie has the original balls and not sure if this has made a difference or not.