I just go on the water for the first time this year. My SI transduer mounted on my trolling motor shows significant noise in the image (screen) when the trolling motor is running. I can't believe this is normal. The side imaging and down imaging go virtually white with noise and the regular 2D sonar in not affected too bad, but some noise also. Can any help me understand if this is normal or is there something wrong with my transducer. Both the trolling motor (Minn Kota Fortrex) and 1197SQ unit are brand new.