yes all 3 panels show up under devices in control panel. (plus my yoke, trim, and pedals)
avionics master toggle does turn off/on the displays.
Plugging and unplugging really does help, I am now at the stage where all 3 panels work, except for one key and that is the flaps lever on the multi panel (ironically of course its the only one I actually use). Pressing it on the panel shows the lever in the VC “jiggling./vibrating” so seems to be trying to do something.
I might have to try fsuipc and see if I can map that key to the flaps manually.