Resently installed 1000.2 dish to replace old 1000. When hooking up the 2 wires to my 622, I used port 1&2. Got a error when running check switch, only 1 output. Moved wires to port 2&3, ran check switch, everything ok. Question: Do I have a bad LNB or must you use port 2&3 when running 1 receiver? I did not plug into the sat. in port.