I just got my AV2000 in the mail today. It works on every componenet in my system with the exception of the most important one. It doesn't control one single aspect of my DA90-ESG receiver. I've used the pre-set codes and then the learning feature and I still can't even get the volume to work. Now I'm reading here about mods. What do I have to do to get this to work??? Who do I need to get in touch with??? Thanx in advance for any input on this.