Edirol FA 101 help needed

HIya, I have just got my Edirol FA101 working again with my Macbook Pro 2017 after Apple stupidly decided to get rid of Firewire support. I did this via the kext install hack on the Apple discussion forum and it has sort of worked. I predominantly use this as part of a DVS system for DJ’ing and a little for Audacity. It now works and I can record on any of the input channels but I don’t seem to be able to output to anything but the main outputs.

Its been so long since I actually used this with Audacity and I can’t remember if I could ever send to multiple outs. I can’t with Rekordbox and really don’t want to buy a different sound card… any advice/help greatly appreciated…