I have a Dish 500 system. I bought a 522 to replace my 501 and a 3x8 switch. What is the easiest way to get the second tuner hooked up? Can I combine the signal coming out of the switch and split it coming out of the wall. There is only 1 coax run into each room. I also have a 508 hooked up in another room. I know this is probably a common question, but I would appreciate any info you can give me. I have the Dish 500 Dual LNB.