We installed .56 tonight with success as well... may have alleviated a previous freezing issue - time will tell...
Question, though: Can y'all help us understand what's supposed to happen when you're plunging WHILE holding the right flipper button? Display indicates it should go up to the upper playfield, but it just barely plunges the ball and doesn't even make it to the pop bumper lanes, let alone the upper playfield...
Thanks!