Hello everyone..does anyone else get pretty good qaulity on one 11800 , but not so good on 11720; i get excellent quality on 11800, especially on fox and upon; somewhere like 99% quality and it dips to around 80% quality on the rest but on 11720 i'm lucky to get 35% quality and can hardly get the signal; id like to watch "the tube" but it is on 11720 and well it isn't coming in so strong. Is this normal?