How many balls should be in this game? I was thinking just 1. Since it has a ball count numbers on the back glass.
Then the next question. Below the to side roll overs (ADD 5 BONUS RED or YELLOW) there is a pin hole for a pin. Is that pin a standard placement? When it is not there it is fairly easy for the ball to bounce back up and re-hit the roll over for a double score. See attached photo.