I setup my C1 for bird and action settings. ISO3 (shutter 2000, 125-6400ISO, AF zone, bird). If I'm on a single ISO setting and select C1 it will not go to the AUTO3 setting. If I'm currently on auto iso1 or iso2 it will go to iso3 but the top iso value displays as 1600 even though I set it to 6400 max)? I basically still need to go in and manually change to auto3 to get it to work. Any thoughts would be appreciated.