I'm in the Philadelphia area, and today I noticed that on my Roamio OTA I was missing a few channels. Specifially 29-1 & 29-2. Oddly enough, 29-3 was still there. I have reset the box, and rescanned multiple times and it is STILL only picking up 1 of the 3 channels. What would cause this? Every other TV in the house is picking up all channels at 80%+. There is no reason to believe the Roamio can't see them. I really wish there was an option to force add a channel manually.