I have a Tivo Premiere with a rooftop antenna. No cable and no satellite. Reception is great on all five of my TVs. I have Tivo Premiere on my main TV. I scanned for channels and it picked up most of the channels correctly but the NBCHD channel that should be on 6.1 shows up on 6.3. The channels that should be on 6.2 and 6.3 are not picked up. However, the internal tuners of all five TVs pick them up correctly. It has to be a programing error in the Tivo tuner software. I contacted Tivo and talked to a lady that told me they do not support QAM. I tried to explain that I did not have cable but she was clueless. How do I go about fixing this problem?