Sorry for the delayed reply!
My how things have changed!
I sold my entire MIDI accordion rig. The Petosa Millenium and my Ketron XD3 arranger. I loved a lot of things about it but in the end it was crippling my advancement. I just was wallowing in the same old songs, not playing the accordion bass other than triggering chords with two-fingered left hand stabs.
And audiences never came up and asked me about my setup. I think (MY opinion) they thought it was all electronic. It's weird when an accordion plays a sax sound.
I went to acoustic only. I bought a new Exclesior 960 with the money I sold my MIDI rig with. I have never been happier.
I still frequent this forum every day. I am still learning so much from everyone here. I will by a high-end arranger. This TYROS2 has me completely excited. I'm even thinking about using it with my accordion on a gig but it seems cumbersome. It would be easier to just use a midjay for midi sequences or music file playback.
Take care.
Tommy