Minor addendum. If you are answering the 12 questions, then I believe you can answer the 8 binary questions without those 8 interacting visibly. For clarity these are the questions with the following choices:
- MC Resolve: Changed/Steadfast
- MC Growth: Start/Stop
- MC Approach: Do-er/Be-er
- MC PSS: Liner/Holistic
- Story Driver: Action/Decision
- Story Limit: Optionlock/Timelock
- Story Outcome: Success/Failure
- Story Judgement: Good/Bad
Once these 8 are answered, you can still choose the OS Domain almost freely (see parenthetical). With the choice of OS Domain made, all other domains will be locked in based on the answers to MC Approach and Growth. So, if you're using the 12 questions, you actually have a lot of leeway on your answers. Those 8 lock in other things as well, but not as visibly until the OS Domain is chosen.
Actually, I think you could go so far as to choose the OS Concern, so long as you remain within the OS Domain without having to worry about what else is locked in.
(If I recall correctly, a Start story places the MC Domain in a vertical relationship with the OS Domain, while a Stop story places the MC Domain in a horizontal relationship. I know for certain that a Do-er must be in Physics or Universe, while a Be-er must be in Mind or Psychology.)