I am expanding a system and it became necessary to add a second MSC 400 in slave to have enough outputs. I set it up according to the tutorial. The master is using RF ID #1 and 2 and the slave is #3 and 4. I checked the box to use port 12 for slave on both. I have connected the two MSC's with both cables as described in the guide. I don't get any output from the slave but the master still works fine. BTW, I also programmed the MX 950 to use the slave as well. What am I missing?