Hello, I just recently programmed my Harmony 670 and noticed that the "Live TV" function wasn't working properly on my R10 receiver. For some reason it would trigger the guide when I pressed that button. So then I went into my settings and did an IR Learn command from the original Tivo remote and it still does not switch between tuners like the "Live TV" button is supposed to do. Then I decided to test my original remote and to my dismay, the original remote is doing the same thing as the 670 remote when Live TV is pressed. Has this happened to anybody else? I've tried restarting the receiving and going into settings within the receiver and haven't been able to fix my original remote. Is there a way to reset the remote to control my Tivo box? Is it possible that "teaching" the 670 somehow scrambled my original remote's function? Oh and I did notice that the "down" button on the arrow pad switches the tuners now. I'm not sure if it ever did that before, but it is doing it now. Everything seemed to be working fine up until I programmed my Harmony to control the Tivo box. Help please.......