It looks like I finally got to the bottom of things with Dish. They aren't carrying any new OTA offerings at this time (meaning guide data) due to capacity issues. (I spoke with someone who seemed to be in the know on how these things happen) They hope to upgrade their systems later in order to do so but it doesn't sound like anything that will happen in the near future. Oh well... at least I can close this chapter for now and call this a learning experience.
Just got a new NBC station in my DMA on Tuesday and it is not showing any guide data on the OTA channel. They have the guide data for the satellite channel, so I don't understand why it wouldn't be on the OTA channel. IT is the same exact shows.