It is quite a treat to restore a pinball with your son.
I did my first pinball (a Xenon) with my son. We went together to pick it up in the mountains of North Carolina and my son helped me pretty much for all the phases. It was so nice to see him come out of his video games and spend some time, taking apart the playfield and the cabinet. He was also the first one to play the machine, without the glass.... He enjoyed picking up the ball from the trough and playing it again. Lots of good memories. Now, he is 25, and still wander through some arcades. Unlike most people of his generation, he knows how to play a pinball machine.
Yves