Hi Folks, I am hoping someone can help me with an issue I have relating to 2 onkyo receivers in a central location being managed over a multiple IR broadcast. I have a TX-NR818 with remote RC-840M and also a TX-SR505E with remote RC-681M. The remotes seem to use the same IR codes so powering one amp results in both powering on. Is it possible to change one of the av receivers and its remote to use a different IR signal so they can be controlled separately? thanks in advance.