MESasquatch

I just upgraded to an ETrex Vista from the base model Etrex. Is it possible that my Vista is not as accurate as my first one? It seemed as though when I used my first one that I could return to the same spot within 10 ft. Now with my Vista it seems more like 30 ft. I know this may seem trivial to some but not to me. Any constructive or enlightening comments would be appreciated!! MESasquatch