Thanks @george1421 , the reason I wasn’t using sysprep oobe generalize was because it was causing my system to lock up at “Please Wait”. I found that un-joining and re-joining it to the domain “generalizes” the system enough so that everything works for us.
Anyway - I re-built the image and integrated the FOG Client (agent) into it. Now it appears the domain joining is working. Bad news is I’ll need to do another round of manual deployment, but that is the last time - after that I will have a full hands off deployment system.
Thanks for your help so far!