I have been using my S1 for several months now.  Suddenly the diameter settings will not exceed 8.071 inches no matter what number I enter above that.  I have not done anything different.  Same cup, same chuck rotary setting, same base height.  I have disconnected, restarted, opened a new file, cleared the cache and made sure all software and firmware is updated.  Any idea what could cause this all of a sudden?