Roland System-1m I/O

Today I tried to to connect my system-1m to Ableton using the USB interface. The interface is recognised by OSX as a core audio 12 in 12 out device so I know I have the special Roland driver installed correctly.
I have not found any documentation of the port mapping and so far I can only get a signal at the first four inputs. The first pair is the main outputs from the synth (including effects). Number 3 and 4 is the Gate and CV inputs.

What about the remaining 8 inputs? I've tried to monitor them in putting signals to all inputs but I can't detect any activity at all.

For the 12 outputs I've only figured out the first pair as the mains.

I'm also on OSX I've found using the 1m via USB rather fustrating. It initially worked, however literally the following day it wasn't been recognised in my DAW (Logic X).

How did you overcome this issue (if you had any issues at all that is...).

On saying that, I've reverted to using oldskool MIDI (for polyphony) and CV (when patched up) more opten than not.

Great little synth though, I really like it's sound.