I have a 2 year old FT-2000 with the DMU-2000 data unit. All was fine until one day I powered the station up and found a problem with my RF scope. The base line for the display was no longer at the bottem of the display box, instead it is "floating" in the middle of the display box, and only the extreamly strongest signals appear on it. Anyone see this problem before? Is there a master reset for the DMU-2ooo that might fix this?