I recently installed a twin dish network lnb on a dish 500. I am able to view all my channels although, I now have to toggle the channels to get a certain channel to lock in. I have a Pansat 3500s and it works fine with dual lnbs and a 5X4 multiswith. Does anyone know how to fix this? I know the twin lnb has a built in SW42. Not sure if I need to change a setting in the receiver or add something inline between the receiver and the lnb...???