We got a new tv today & had to reprogram the RC64 remote to work with the new set. Problem we're runnin into is programming the remote to individually control a HD DVR & a HD receiver. We were able to do so when we had our other tv but now when the remote is in directv mode, it controls both receivers instead of 1. I tried programming a 2nd receiver on AV1 but it does the same thing which is control both receivers. Im wondering if I have to unplug 1 of the receivers to program the remote so it doesn't see both receivers.