Howdy,
i´d suggest to touch base with Munich.
It´s a piece i wouldn´t entrust everyone, simply because it´s really unusual under the hood.
The stepping motors may be something a number of watchmakers did come across before, but it´s a really fine watch and the mechanical components of the complication are best treated with experience.
In any case, it deserves some proper care. These are lovely watches!
Cheers,
Peter