Hi there, I have 4-HD recievers & 3 sd recievers. Didn't have enough outputs with 1 wb-68 & DTV would not come out and do anything for free until I ordered something else. So I have been reading on the forum about running 2- wb68's so I can have enough outputs, I just got done with the installation and all my recievers are working but some channels don't come in and say searching for signal on satellite (771). I am pretty sure I have the installation correct. 4 lines from satellite going into 4 splitters(passive on both legs) On each output from splitter going to same input on each wb68. I have triple checked before posting and seeing if anyone has any ideas what is causing this...thanks!