Quoted from Medisinyl:Works consistently on my game, and seems confirmed by another above, so there must be some way to set it up for it to happen if not working (someone noted that perhaps the magnet is in a different orientation).
If you spent an hour, I imagine it isn't inaccurate timing on yours if you never got it to work, but as noted, it's nearly a 100% success on mine when timed on the count of 3 with 1 and 2 being the first two crowbar hits during the Borg scene (equal time between 2 and 3 as 1 and 2 [too early, and it will often drop as you say on mine]). Can get up to two strong hits on the zombie, enough to trigger the switch.
It's a fun feature, so it would be a shame if it's not working more universally in the same fashion for others.
Could find time to take a video if interested.
I tried multiple timings. I also tried it on the first and second prison multi ball. I didn't look in the settings. During the animation the ball will release with a flipper press and then the magnet pulses a fraction of a second after release every time. I've got a premium on code 1.60.
What code release are you using? I'd like to see a video.