Many Bally bingos have a design that causes a tilt if the coin switch is
activated too slowly. This is intended so that it will tilt when someone
tries to cheat using a string or wire to activate the switch instead of a
coin. This often is a problem in home use when you're not using coins and
just tripping the switch with your finger. To deactivate this 'feature'
bend the top switch piece on #4D of the Control Unit up so that the switch
cannot close. #4D is the 4th switch stack from the left on the Control