Ok here is my story I have had a dish 500 along with a 510 and a 322G recievers running fine. But wanted to add a 625along with the other two. I bought a used dp34 switch and hooked everything up one line to the 510 two to the 625 and one to the 322 Wanted single mode but think was in dual. Anyway worked most the time then starting getting a big red error on the screen and lost signal. Signal is around 70-75. So upon looking at the lnb found one side was cracked on the protective cover. So ordered a new quad lnb but having trouble. My question is how do I wire this setup? Do I need one line to the 510 and two lines coming in to the 625 and 1 to the 322g in single mode? Will each line run a dual reciever or on a quad each line only handles one?