First off thanks to everyone for thier help on this problem. Here are some answers for your questions, hopefully they help.
I tried 8 caches today with both battery saver and normal modes. Unfortunatley it made no difference. The closest I got was 32', once I was 64' off. While my brothers Magellan had him on top of them each time. Datum is set to WGS 84. The files were loaded from geocaching.com as a zipped pocket query in .gpx format. Although, I have tied .loc and single .gpx files, but it has made no differene. I can't seem to find what datum I am sending them as in either goecaching.com or gsak, but the GPSr is set to WGS 84.
One thing I forgot to mention. The compass needle is broken up on the compass screen...the pointer will be in one spot, but the rest of the needle is not lined up with the pointer. I don't know if that has anything to do with it, but thought that may be some sorth of symptom.
Thanks again.