again - slow down, be patient. At end of post-10 I suggested and I do it again: Do NOT want to start a TWO-Player-Game - lets stick to the problem "We want to start a 1-player-game, the pin shall reset the Score-Drums in the Backbox, shall reset playfield stuff (dropped Drop-Down-Targets shall be pushed-up), pin shall reset more stuff and then it shall kick-out the ball and give power to flipper-coils.
In some way You can start a game - but then it comes to idle - it does not kick-out the ball.
Think of "way back in time" - an Arcade-Room, many people playing, some 50 pins standing in the Arcade-Room. A thunderstorm happens and a lightning hits the local power-station - a BLACK-OUT. The operator says: Sorry folks - this is the end for today - everybody is going home.
The next morning the operator goes from pin to pin - some have not been played - some have come to an regular end - some have ended "in a 2 player-game the first player was playing ball-2, he has made some Bonus on the Bonus-Ladder, the ball (accidentally) was/is sitting on the playfield in an Eject-Hole" and then the Black-Out ...
The manufacturers made the pins able to "handle such an extraordinary ending of game (game before)".
So lets bring the pin into such an state. Look here http://mirror2.ipdb.org/files/1214/Chicago_Coin_1976_Hollywood_Parts_Catalog.pdf on page-20 (ori-18), toggle-off, unplug the main 110 VAC power cord (Safety Reasons). Manually step on the two coils step here, step there --- in the end have it somewhat "in a middle Position".
Look on page-23 (ori-21) - manually step on the two coils step here, step there --- in the end have it somewhat "in a middle Position". Put some points on the Score-Drums. On the lower-part of the playfield let some Targets drop.
Plug-in, toggle-on, manually press the armature on "Credit-Reset-Relay" and watch - do the Score-Reels reset ? Does the Bonus-Ladder steps down to Zero ? Are the Drop-Down-Targets resetted ?
Does the pin comes to an halt / stop / idle / nothing moves ? THEN manually activate the Outhole-Relay - what happens ? (((Maybe nothing happens - but still the information is important)))
I look at the JPG in post-12 - I "enumerate" from left to right the bades: A, B, C, D, E, F, G, H.
A, D, E, F, G are the stationary blades - the others are the moved blades. Unplug the pin - relay is at rest - press a bit onto the armature - see how the moved blades want to move / travel ? So some Switches want to open - some Switches want to close.
You may have to adjust the stationary blades in the way that after adjusting all works as it wants / is intended, greetings Rolf
P.S.: "Geneva, Switzerland" is nice - I hope You always have time to do some days of vacation, greetings Rolf