I'm having a problem where during Multiball, I may end up with 2 or 3 balls in The Depths. The game will try and try to eject a ball, but usually it fails. Eventually the game times out or I end it by going into the menu. It is quite simple to eject all of the balls with the coil test, but during the game, they get stuck. Inevitably, this happens during a good game, so I lose out on a good score. Any advice? Thanks