Hi there,
I will try to give your some more information, what we are doing on this machine in the future.
At the Moment we are solving just little things:
First we have a new place to build this machine. It is a cellar with 70 m². So that is so much space that I am thinking of buying a new machine just for playing 
We changed also some cables in the cabinet and connected the lights of the start button.
To avoid that the ball can lie down between both playfields, I created a kind of barrier. This is made within a few steps:
1. Create a CAD:
Barriere (resized).JPG
2. Print it on paper to see if it fits.
3. Use a online service to laser it:
BarriereRL (resized).JPG
4. Install it:
BarriereEingebaut (resized).JPG
I guess it look pretty nice, because it is so clear that you nearly don't recognize it.
I hope some of you are interested. Best regards
Philipp
BarriereEingebaut (resized).JPG
BarriereEingebaut (resized).JPG