I just got my whole home setup at my house and since I only have 4 receivers, the technician only setup a cross sharing meaning reciever 1 talk to 2 and 3 talk to 4, he told me it was to avoid overload of the swm splitter. Is this true? Now I want to change so all can talk to each other, how can I do this? Also the dude failed to install the Deca to my router so my receiver can access the internet. TIA.