I'm trying to add a Marantz AV7702 MK II to an existing Procontrol 24.r system but the Marantz is not included in the device listing. I tried the general Marantz stereo receiver but it did not have the functionality needed. I then tried a Denon and then an Anthem AV device template but neither were recognized by the Marantz after downloading. Any advice would be greatly appreciated.