Thanks Brett, just to clarify this was for Fabrication hangers not families. I went through and minimized my embed parameters and it seems to work ok. I needed to use Revit's "Attach to Structure" feature before it would actually place the crop circle family. One question I have, when it places the crop circle family over top of the hanger, is it looking at the Rod Size from the Fabrication Hanger (eM_Rod Diameter) or is it looking at the rod size chosen from the end of the rod (Fabrication Ancillary)?