Just bought the above; want to use one MX-880 with two MRF-350's (with RF control), the first in one room (closed system A), another in a 2nd room (closed system B). Programmed the remote no problem, all devices set up, macros in place, with specific devices tied to their relevant MRF (RFID 0 for system A, and RFID 1 for system B). System A works like a charm, but system B doesn't at all. The MRF for B shows the signals are being sent (MRF and emitters light up appropriately), however all devices fail to operate on RF (however work perfectly with IR, telling me that the codes are correct). I've confirmed in the RF Control feature in CC that the devices are linked to the correct MRF, and that the emitters are in their correct corresponding plug ports. Help!!