I purchased a Lakemaster chip about 7 months ago. It has some lakes in regular and some in HD. Lake Cumberland is a lake I fish quite frequently. It does not show up on my HD list of lakes and definitely is not contoured as HD on my units when I select it. I shows contours and I can highlight depths and all that. My friends have Cumberland as HD on their Lakemaster. Is there an update available for this chip? What am I missing?