Hi, I've just acquired my first solid state Gottlieb. Its a Night Moves. The issue I'm having is when 2 balls end up in the outhole at the same time like multiball double drain or tilt the outhole solenoid energizes long enough to allow both balls to go to the trough. This leaves the outhole opto beam closed and the machine thinks there is only one ball in the game. The outhole will not kick the ball to the shooter lane and game cannot continue. In solenoid test mode the outhole solenoid energizes a much shorter period and only allows one ball through to the trough. Any ideas how to fix this?

If I remember correctly it only has one mechanical switch and that's in the trough. The opto is in the outhole. I can post a pic when I get home.
I did clean the opto lenses but that was maintenance and before I realized there was an issue. I'm fairly certain the opto is working correctly. There is a red led on the opto board under the apron. It is lit when nothing is blocking the beam and goes out when it is being blocked. The outhole stays open too long in gameplay allowing both balls to pass. In test mode it snaps open and shut only long enough for one ball to pass. I can try to get a video up this evening. Thanks.

Here is a video of the messed up process in action.

I started a tech thread on this. We can move this over to that thread if its better suited over there.

https://pinside.com/pinball/forum/topic/night-moves-outhole-issue

Does anyone know how to adjust timing for how long the outhole solenoid stays on with these system 80B's? This Night Moves is bugging me.