I have the above combo and believe the built in sonar may be the reason for a lack of detail from a graph that gennerally has exceptionaly high definition. I have a similar graph at the helm (LMS-332C) with the thru hull transducer and the detail is crisp with minimal manual adjustment. But the one on the universal sonar will not manually adjust to a likable or should I say livable detail no matter how much fine tuning I do.
I wonder if anyone else can attest to this

Are the universal sonars less than efficient for a high end graph such as mine
Before I waste any money on a typical surface mounted puck to see if it makes a differnece, Could the graph be defective
Your opinions are always helpfull, Thanks