Quoted from mbelofsky:Pablo at Stern Tech Support sent me a new Walk-lock subway assembly to fix up the issue when two balls are in the portal lock and the rightmost finger is not in the correct position so the ball is not closing switch 47.
The first 4 photos are the new assembly. The photo with the new one on top and the old one on the bottom shows how much slack there is in the old one that the rightmost finger can get jammed between the rod the moves the fingers and the side of the assembly.
The next photo shows a close up of the old assembly with the finger jammed as described above. You can see the semi-circle of the finger in the rightmost semi circle opening.
The last two pictures are the new one.
The differences I can see are
1. The welds are much cleaner on the new one and are mostly flush with the assembly.
2. There is no play on the new assembly to force the rightmost finger to get jammed as it does on the old assembly.
Thanks to Pablo for sending. I will send back the old one and hopefully the new one will work with no issues. It was super easy to replace.
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So, I’ve had 2 balls in the lock, and the game doesn’t know it because the first one to come out is not where it should be. I’ve had to shake the game enough to get it to roll where it needed to be. Is this the problem you were having that the new mech solves? I wasn’t sure if it was just something that is going to happen every so often, and that’s just pinball.
I have to look at my portal lock as well. There are times when I turn on the machine, start a game, and the disc just spins without the game knowing it. I have to re power the game to fix it.