As a 4, when functional, I go to 1, the Achiever, under stress I go to 2, the Helper (or in my case, meddling, micromanager). With my disabled late husband, I was stuck in Helper-Caregiver most of the time.
As a 7, when happy, my bf goes to 5, the Investigator (also the Scientist). When stressed, he goes to 1, the Know-It-All (the down side of Achiever)