Had issue with new 597cihddi today. While fishing I noticed the unit was only displaying red and white on 200kz sonar, the 455 di was working fine. I had the unit set on original color pallet and the transducer on the trolling mtr. I also have a 798ci si in the boat with transom mounted trans. I'm thinking something is wrong with transducer or the unit itself. Anyone else had this issue? Should I send the unit back to hb?