Thanks for all suggestions. I will check to see what rev level I have. It will be several weeks before I can get back on the water again to try any of the other suggestions.
Kosmo: For the most part like I the unit. I think it does great at showing detail and ease of use. My biggest fault with it is the fact that when trying to arrive at a waypoint and I keep zooming the map in to get better, closer detail there is such a hesitation in the GPS catching up after the zoom.
As I get really close and the last couple zooms to the 50 ft or 10 ft range many times I will be past the way point before the GPS catches up.
I've learnt a little patience but its just aggrevationg. That's really the only issue have have had. Until this depth thing jumping goofy.