With my humminbird 898c SI just wondering if when I'm on full screen SI, can I really get a full screen? What I mean is the side scan full page does not go from edge to edge. I have all the info on the left side of the screen info bar off, but It just leaves a white space. All other screens go out to the edge. Is this just a feature on the 898c that I have to live with? Any help is appreciated.