Hi, I have Dish 1000 with 2 receivers. I was thinking about adding a 3rd receiver. How would I do this? I checked out the dish/lnb. i have only two wires coming out of the dish and into the house. I know that I can't just use a splitter to split one of the lines. Is there a way to do this? There aren't any open ports on the twin lnbs, 129 is going to the twin, two come out of the twin and into the house.