I route the MC3 through the CME USB interface so that's what I selected in the midi monitor. If I select MC3, it shows the same messages, PC 48 for channel 1 (HX is on channel 1). In the CME editor, I have the output of the MC3 going to input of HX, but it doesn't change anything on the HX. If I route the MC3 to the midi output instead and use regular midi cables, it works correctly. It seems like a glitch with the HX and the USB interface. I've tried lots of different routings and different usb cables, but still stuck. It's not a big deal, but I'm curious what's going on.