I have owned a GPS for quite a long time, but I am just starting to use it for geocaching. I am having a little trouble getting use to handling the GPS when finding exact locations. My GPS always tends to send me to the wrong point by about 40-45 feet and I can never get an exact location. Everytime I move away and follow it back, per its instructions, I end in a slightly different spot. I have a Garmin eTrex. Is this just an error range I have to live with or do some of you have any "tricks of the trade" in finding a more precise location? Thanks for the help!