I love this topic. I was missing the plumb bob + wire from my Airborne, but my supplier only had the bob, so I went ahead and fabricated one myself from a cloth hanger.
It is a temporary solution, but hey, so is life.
In the same machine, I also fabricated a new metal frame to hold the flasher behind the injector. If I ever need to rebuild the flippers, I am going to go ahead with Sega and WMS parts, thus creating a real Frankenpin.