I just received my boat and had a cm599lh transducer and a 3D transducer installed. On the 3D I can mark fish ok up high but on my cm599lh it does not pick up what the other transducer is picking up.low and high frequency on cm599 is not working that well and I can’t get “worms” to pop up to indicate fish. It’s mainly blank on the top water column. What should I do? Source says tztouch3d. Should it be saying diFf amp?