OK, I'm officially a moron. I knew it had to be something I had overlooked (multiple times) and it was.
Apparently when I ran the Setup Wizard after installing the 650 it created a channel lineup associated with the digital TV tuner input. Although I had deleted this lineup from my Snap Stream.net account it remained associated with the digital tuner input.
I found this association in the Web Admin. It was under Settings / Audio-Video Inputs / Edit Settings for the Digital Tuner input. On that page Under Channel Lineup I had to change to the Digital Lineup I had created for my zip code.
Digital Guide Data success
Now to get BTV working with my new HD Homerun in my other PC
But first I need a
or three...