Look at the lower switch blade. It has a shorter zinc plated retention blade just above it - they sit in the bakelite stack together so are connected.
Your retention blade is bent right up touching the upper switch blade = shorted switch..

ShortedSwitch4.jpg

See how the retention blade should be with its tip against the lower switch blade:

SwitchLeaf2.jpg

@ChrisHibler, no problem with me! if you want the PNG version before I compressed to JPG, PM me although I didn't compress it much. I probably need to PM you at some point anyway about adding other content to PinWiki.

Downstream from transistors Q14 and Q15 are power transistors Q5 and Q1 respectively which drive lamp 13 (ramp solenoid) and lamp 14 (left domes). You need to test those two transistors.

MonteCarlo_L13-L14.jpg

How did you test the transistors and particularly Z4?
The lower left dome flasher lamp next to the left slingshot is on the same circuit as the upper left dome flasher lamp. Are both those left dome lamps not working?

It looks to me like the ramp coil has some sort of End Of Stroke (EOS) switch associated with it that's activated by movement of the ramp. Is that switch operating properly when the ramp is down and up? I guess the switch should be normally closed so the coil has higher power to lift the ramp.

What happens when you very briefly ground the base leg of transistors Q5 and Q1? Do their respective lamp/solenoids flash/activate?