I am not successful in trying to change remote addresses for 2 HD TiVo's. I did follow the instructions and I have tried addresses 1 to 5 with no luck. After programming the remotes and going to system info, everything is fine. When I switch from 1 box to the other and then back again, then both boxes are programmed with the same remote address. I have tried unplugging the units and still no luck. Any ideas?