Hi pinsiders
for my Shangri-La http://www.ipdb.org/machine.cgi?id=2110 I made myself a little red box. Now I have everything (as before) PLUS: If I hit ALL Red / White / Blue "1", "2", "3": An Extraball. The simple red box I call "Type-3", works wonderful.
I then made a white box to have (Type-3), Type-2, Type-1. I can change in between by turning a knob on box-white.
See here (post-09, post-11 with pictures): https://pinside.com/pinball/forum/topic/anyone-know-the-first-williams-game-to-include-a-manual#post-2787543
Greetings Rolf

Hi pinsiders
the following "original post" is nonsense - I mixed up "Lady Luck Recel" with "Lady Luck Williams" --- and the snippet of schematics I show happens to be "Lady Luck WILLIAMS. Sorry, greetings Rolf

Hi Arcane
is the Number-Match-Unit not working / stepping in Your Recel-Lady-Luck ? See the snippets of schematics, greetings Rolf

0Lady-Luck-Work-06 (resized).jpg