I have been using my new X56 for a few weeks now and have my binds set to my preferences and all works well. However on the thumb side of the Throttle there is a silver/grey slider switch which you can only move forward or back. In the forward position it registers in the Devices and Printers throttle icon settings but when I have tried to set it to something eg FA-On/Off in my game controls it never binds. I don't need this control as there are more than enough otherwise, I just wondered if any other X56 players know what it is supposed to be used for?.