Hold onto your plunger: Pinball, that great equalizer and last refuge from the Golden Era of Arcades, is making a comeback. The folks of Professional and Amateur Pinball Association [PAPA] might argue it’s never left us: shoved into dark corners or unfairly ignored, perhaps, but never gone completely. In fact, they’ve been hosting international competition at their Pittsburgh, PA headquarters for years. After the 2004 championships, the building was wiped out by a devastating flood. Every table: destroyed. Such was the drive to carry on their mission, the facility and collection of machines was entirely rebuilt in time for next…