A bit of an old post, and thus, I have seen this before.
However, I wanted to officially say nice job on the Cosmic Chaos BH II
Also,
Quoted from Wyzeguy:I just played Black Hole for the first time a couple days ago at the PHoF in Las Vegas. I liked, it but have a question. Every time the ball got past the flippers on the bottom playfield it was ejected below the flippers and down the drain. There is a gate that could close to take the ball to the right flippers instead, but it never closed in the three games I played. Was this a malfunction or was there something I needed to finish to close the gate?
Not a malfunction.
When in the basement you need to get the 3 drop target bank down -or- the 4 bank target down to open the upper PF gate switch. Or, prior to going downstairs, get all 4 yellow targets at the lower right and then put the ball through the right flipper lane to open the gate switch. Then you are safe to head to the basement.