So - when I load a new preset and go to snapshot mode, as soon as I press a footswitch for an alternative snapshot, I get the small 'E' icon which suggests I have edited something. any further switching of snapshots doesn't help and the snapshots do not default back to the original settings. Yet, when I go out of the preset and come back into it and go back into snapshot mode again, the 'E' has gone but returns as soon as I hit a footswitch.