Is it normal for some HD stations on Dish to have pillarboxes or letterboxes? My friend has a 50in tv, as do I, and he gets cable vs. dish. On the same HD station, mine will have bars while his does not (he is not in zoom format). I noticed that I do get more stations in HD than he does, but many of mine have bars and don't look that much different than that SD station. I'm thinking maybe I have something set wrong or need to make some kind of a modification. Any suggestions or comments? Thanks.