If ball runs the gauntlet all the way down to far right lane, be prepared to give the cabinet a whack on the right side to save the ball!
Concentrate on the spinner and the two saucers in the top left.
Sometimes when trying to cradle the ball to the right flipper, it will roll down the lane and fall out of it essentially leading to a drain.
"Mystery bonus advance" is always 1 to 3 advances. If you see the third advance, be ready for the ball to return to play!
The bonus maxes out at 10,000 (indicated by the balls on the backbox). At this point, it would be wise to collect and build again!
Plunge any lit "advance bonus" lane, preferably one with a nicer follow-up after the lane.
Since the bonus count is a mechanical feature, the game may mis-count bonus, generally in a player's favor. Mechanical nature of pinball!