I have a map using a basemap (not from ESRI), I changed the background from "tiled" to "dynamic" and set the WKID in the viewer to wkid="2283" (NAD 83 SP VA-N ft). Everything looks good on the screen and my coordinate widget is showing the correct coordinates for State Plane. But......when I print, the print widget must be switching back to a web mercator because the scale is not correct. The map is showing 1"=100' but that is not what is printing/pdf'ing. The graphic scale bar looks relative to the map, but it is not 1"=100', more like 1"=120'. Why would the print widget not be honoring the wkid? Everything measured in the viewer is correct just not when printing.