We just got DISH installed and I wasn't here myself when it happened. We are supposed to have a 3rd TV mirroring TV2. After thinking we had a remote problem, I found out that when we change channels on TV1 it also changes the mirror TV. How do we get it to mirror TV2? From what I have read about cable set up, it appears that it is wired correctly but I'm not at all sure really. Can someone post a diagram of correct wiring? Currently a cable comes from antenna to some kind of splitter then to another splitter. The second splitter has a cable going to TV2 and the mirror TV. Thanks