You did a great job ! When I could buy me my Shangri La it came "Cabinet and Backbox painted plain dark-green. A friend who likes to do restauration- work painted my pin --- not really trying to match the colors with the original (see the first JPG) --- I like it - well I like every Shangri La as it was "my first love back in the late 1960ies").
Do the bumpers in Your pin work "lively" or "a bit lame" ?
See the second JPG, at "my black B" - the Kickoff-Switch --- see "my black C" - I took it apart. Banging with the fist at this place - banging upwards onto the plywood: A bolt jumps up and so the Kickoff-Switch opens - Self-Hold-Circutry of the Lock-Relay is cut - relay let go - pin is "toggled-off" (but attention: As the pin is still plugged-in: At some places 110VAC current is ready to flow - do not touch the inside of the pin).
Here https://www.ipdb.org/showpic.pl?id=2110&picno=20171&zoom=1 to the right of the lady 's hat we can see "Same Player Shoots Again" - and in Your pin ? Greetings Rolf