On my older 332c it shows an outline of Sugar Lake (Presa Gomez) in Mexico (just south of Roma, Tx). I can zoom in on the lake outline and it will continue to expand so I can see my routes and waypoints.
On my new 520c there is a also a small outline of Sugar Lake, but when I zoom in on it it disappears! Apparently, when in Mexico, the 332c has the advantage over the 520c.
Why is this, and is there a way I can expand the lake outline (zoom in) on the 520c in my console? Since I have the 332c on the bow now, I would like to be able to see the lake outline on my 520c on the console for navigation purposes. Note: I am talking about a lake outline only, not contours.
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