Am trying to customise the FN buttons to match those on my XPro2 and in particular access to the Drive settings. I have assigned FN3(top quadrant of the 4 way controller with the MenuOK button in the middle. Despite the menu saying this has been assigned when I press it nothing comes up. This also happens when I assign it to FN2 on the front of the camera. Other FN buttons seem ok.Camera is running very latest firmware.