I remember cars in the 60s and 70s had auto transmission band adjustment as a routine service. Nothing difficult, just need a service manual, a torque wrench and carefully watch what you are doing.
You probably ought to listen to the voices of experience here. These guys know our Tracs very well. If they haven't done it, they have heard about someone else's experience.
I know nothing about adjusting bands on the Trac's modern transmissions. It does not appear in the maintenance schedule anywhere, even on the Severe listings. You might want to consult a FORD service manual or a trained and experienced FORD technician. before messing up your transmission. If MY trac were having transmission problems, I would not go any farther than a pan drop and filter change doing the work myself. (Actually, as busy as I am, I would probably just take it to the dealer and let them do it, and any other service work they recommend.)