I got into geocaching a while ago and just purchased a Sportrak Map on Ebay. After an entire day of caching, I was getting frustrated that i wasn't finding any of the caches I was looking for so I compared the coordinates to another GPS and found the one i had been using is over 100 feet off. Has anyone run into this before and what do I do to fix it? I called Magellan and a very rude person told me that the Sportrak Map is obsolete and no longer supported and that he could not help me. I have a data cable on the way for it. Is there any reason to believe a software update could fix it? Any help would be appreciated