I live in Southern Pa. Just replaced a two dish system with a single Eastern Arc satellite because I wasn't getting all the channels I was supposed to in HD. I get dish 200 package and Hd platinum. After the changeover the hd is not as sharp or clear as the two satellite setup. Tech said I had a 72 signal which was fine. However, I know the picture is not as sharp. Main set is Samsung 52 in LCD, with VIP 612 DVR. Have checked all connections and tv and receiver set to 10801. Is this common? What are my remedies?