Pat, not sure I can answer in a post, here on the notebook. I need to get out my unit and look. I can tell you it has nothing to do with decimal places but Lat./ Lon. format. Where are you located? Sorry it took me so long to notice this post. You've probably already figured it out.
Hybrid/Striper Guide Skiatook Lake Fishing Guides
Lowrance Pro Staff, Zebco Brands Pro Staff,
Yeti Pro Staff, Costa Del Mar Pro Staff, Mercury/Motor Guide Pro Team.