yeah, the expected behavior is after locking ball two, a ball should come out of the trough and fire automatically from the launcher.

the game obviously knows lock two was activated ... but then it doesn't eject a ball from the trough. hmm.

i assume your second locked ball is always at the drop target under the borg ship. have you tried locking the second ball by going up the delta ramp and into the back of the borg ship, or at the neutral zone? lock behavior from these other lock locations might give us a clue.

unfortunately, the game seems to turn those locks on only if the multiball percentage drops below a certain level, so you may have to reset audits or something. i don't think there's a direct setting to enable them.

ok, so your test with the borg ship lock tells me that the problem has something to do with the subway / diverter / left VUK. for whatever reason, either the ball isn't getting to its expected position down there or the game thinks it's not getting there. that's the root cause of your issue.

i think we can eliminate the ball trough as a suspect, since it works fine when you lock a ball in the borg ship.