Using two Tivo's and one WebTV as input sources via VCR1, VCR2 and TV/SAT I am having a problem with my receiver retaining the audio format I set. For example if I set PLII for VCR1 and NEO6 to VCR2 I have no problem switching back and forth between sources and still retaining those settings however once I place the receiver in standby the receiver defaults to Pro logic. I have used wall outlet, Tripplite ISOBAR6 and Panamax 5300 all with same results so know power always on is not the problem. Any ideas is there anyway the input sources Tivo, Webtv could be the cause and if so how and how could I correct it. TIA.