Ok, so I want to split the signal from a TV 2 from my 722 to go to another TV. I thought it was as easy as going to walmart and buying a simple splitter. Well when I hooked it up, the picture quality on the 3rd TV is really bad, until I turn the 2nd TV off. So there seems to be some sort of feedback going from the 2nd TV to the 3rd TV. Is there anyway to filter this? I tried the seperator too, included with one of my 722's, and that just produces a snowy picture on the 3rd TV. So not sure what I need...