I was told by DirecTV that I need to use Sat. B (119) but I am having trouble getting a signal. On Sat. A I can get 90+ on the signal meter. To get Sat. B is it just a matter of moving down from the current strong signal or do I have to move my dish left/right as well? I cannot any signal at all for Sat. B. I do get a mediocre signal on Sat. C but that doesn't do me any good. The only channels I cannot receive are my locals.