The 2x8 switch will only be able to supply signals from the 101 satellite. I'm not sure exactly what you have, but any inside switch has to have all four lines from the dish connected to it. Then the outputs can supply all satellites from the 3LNB..
With the HR20 install, did they put in the 5LNB dish? Is the inside multiswitch a WB68?
With the HR20 install, did they put in the 5LNB dish? Is the inside multiswitch a WB68?