We currently own a bullfrog desk and Pearl Rivers XL1200 moving heads. The heads are capable of 16 bit dimming, but the desk doesn't seem to support this function. When creating the fixture file in the fixture editor, it will allow you to create a 16 bit dimmer, but when loaded on to the console it will not function. Please could this be a possibility. It's a shame that it will support everything else running in 16 bit but not the dimmer.