I've emailed Stern about this, but have still not gotten a response. I am having a problem with the Vengeance multiball. When I shoot the captured ball at the start, the second ball just sticks to the magnet with the first one 90% of the time. It doesn't release and award the third ball. When the timer runs out, it will drop both balls. My first thought was the optos, but they test fine. Anyone else seeing this and found a solution?

I don't believe it is supposed to be a physical knock off from the magnet. The rules state that a hit to the captured ball will add a ball to the playfield. On the rare occasion it works correctly, it immediately releases the 2 balls from the magnet and ejects a third ball. Most of the time it doesn't put the third ball in play and when the timer runs out it releases the 2 balls. Many times the hit is hard enough to drive the captured ball up the lane and the ball you hit rests on the magnet. On the METLE, there was an issues with stray light affecting the optos on the grave marker lane. I've tried removing the Vengeance flasher, but it didn't make a difference.