The gauge is designed for a 1.406" nose height, which is 62.5% of a standard 2 1/4" ball. Diamond tables are typically 1.453".
To explain why it is that you may not like the way that Diamond tables play:
Diamond tables require a higher nose height because they use Artemis cushions, installed upside-down. Installing the cushion with the rounded surface facing down creates a lower contact point on the ball, than if the flat side of the cushion were facing down. This creates inconsistency in rebound speed, dependent on the speed at which a ball hits the cushion. This is also why Diamond tables tend to bank short.
Have you installed Super Speed on Diamond tables, Brad?
To make them bank longer ?