I just bought a pansat 3500sd box and set it up to my existing dish network system and when I search for the channels on echo 7 and echo 8.1 I get some ppvs and weird channels like mtves and espnd but no regular espn or mtv. My system is strangely set up I think because I have 2 dish500 dishes. One has a DishPro Dual LNB and the other has a DPPlus LNB. They are connected to a dp34 switch. PLEASE HELP!!!!