EM game gets stuck on one ball and does not advance? How to fix it.

Today I finally got a chance to set up a game I purchased last year and brought back from Houston. A 1976 Williams “Space Mission” EM game, the theme centers around the Apollo-Soyuz link-up in 1975. This game exhibited a somewhat common problem, of the ball not advancing and being stuck on “ball one” over and over, so the game would never end. In this series of videos, I illustrate what causes this and how to fix it.