If you use a Garmin GPS you may want to check to see if it has the latest software installed. I just purchased a brand new Map 76 and had to update the software because a newer version is now available.

To find out what version your GPS uses find "System Info" on your menu and open it. The version of the software installed should be displayed there.

To find out what the latest version of software go to http://www.garmin.com/outdoor/ and find and open the page for your model. Then click on "Updates and Downloads" in the menu on the left and look under "Unit Software" so see the latest version available.

If you don't have the latest version you can either use the "Web Updater" after downloading it or you can download the software and install it on your GPS.

With the advancements in the WAAS system your unit may be much more accurate with the latest software available.