HDS-5 Nautic Insight Contour Lines Problem/Question

[Iparker]

I just took the plunge and bought the HDS-5 with Nautic Insight. While waiting for the transducer to arrive, I hooked it up to my battery to get acquainted with the system. I soon noticed that the contour lines suddenly disappear in a straight north/south line in LJ and from Dana Point up to central Laguna. Unfortunately, these are the two areas I plan to fish and I see no reason why the contour lines would disappear in either of these two areas. I've tried all sorts of setting adjustments with no luck. I figure this must be some sort of glitch and I've tried it both in and out of demo mode. I've sent the screen shots off to Lowrance. In the meantime, can anyone with this same system confirm they don't have this problem.

Thanks - Ian