Hammond XM2c MIDI drawbar module in a stand-alone mode

Has anyone tried to use Hammond Suzuki XM2c drawbar module as a stand alone unit?
Some years ago I purchased the XM2c drawbar module as possible addition to my Hammond XK1 organ or other keyboards with a Hammond organ Software emulator.
It turns out that the XM2c drawbar module can’t be used without the Host XM2 Midi Module.
I managed to power it up and record midi sequences, but I realized that the current MIDI assignment is not compatible with any non-Hammond keyboards that I own .
Example: All 9 drawbars in the Upper Drawbar Unit - just one CC#80.

I’m thinking of substituting the current board based on HD6417144 controller with my own Arduino board.