Nightmare is your diverter still working properly?
I also had the same issue and fixed it. But after a while it starts to not work again.
Now it works during the coil test but in the game it does not open.
Guess it is a shitty mechanism...

(the good part is that the machine works without it. You just don't have physical locks which sucks, but all features work.)

I emailed Stern and this is their response:

"Please inspect the diverter assembly located on the under side of the playfield. we are thinking the assembly might have a lose set screw that is causing the diverter blade not to move correctly. See attached PDF."

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In my machine, the problem seems to be this screw that gets loose a little. Even just a few plays after I fix it.

Tried again. I give up. I am assuming the machine does not have physical locks and I will live happier like this... in ignorance. hahah

It seems like the coil opens with the current and then the current stops straight after and the diverter closes. It's so annoying.

Thank you. Will check and try this.

Maybe we need to start making some videos to show what is happening? And then I could round them all up and send to Stern hahaha