I know how my dominoes fall, I just don't know how/in what order to set them up. If that makes sense.

That does make sense. Even if it feels like a mechanical exercise, can you work backward to figure out what the setup needs to look like? Then at least you have some fixed points to work between, and if necessary you can work your way between those to fine-tune the action. I realize this sounds like it will end up as Zeno's paradox, but hopefully at some point it will start to sound like fun to write the linking conversation or action scene or shocking betrayal.