Hi there, I have been doing work in Southern California using StatePlane V (SPV). I've noticed "shifts" in data (sewers, property lines, manholes, etc.). All of the shapefiles are in SPV and I am using World Imagery Basemap. I then go to Data Frame Properties, Coordinate System, and choose "NAD 1983 StatePlane California V FIPS 0406 (US Feet)". I have also had this problem with StatePlane VI. Is there something I am missing? Is it just the basemap that is off? What I am doing requires precision and some of these shifts are 30-60 feet off. Please help!