I recently bought a new Lowrance elite 5 hdi and can't figure out how to fine tune it. It shows structure pretty well but shows small gamefish or baitfish everywhere. I was at Texoma yesterday and driving along and saw all these what I would say are baitfish, I stopped threw the cast net several times and not one shad. All of the structure that I mark shows all of the same fish in it but nothing. Long story short I believe what I'm seeing is just some sort of distortion but I can't get it to go away. I would have posted pics of it but not sure how. Thanks in advance for any help.