External touchscreens on Gio

I can't set up our two external monitors on our Gio console. They work fine with our Eos, but when connected to the Gio they both map to screen A, the primary on-board touchscreen. While both display my chosen content and listen to instructions from monitor arrangement settings I cannot calibrate them to respond on their own screens. I noticed today when trouble shooting the issue that the monitor arrangement window displayed external monitors 1 and 3 although I was using outputs 1 and 2 on the back of the console. Has anybody come across either or both of these gremlins before and more importantly can you tell me how to fix them?

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