This. And then find the following line to make the AI use your assigned in-garage setup:Make sure on the screen that displays the car in the large hangar, that you choose the tuning button. Then from the options at the upper left, choose the LM24hr aero package.(not sure of the name) Finally BEFORE LEAVING THAT SCREEN, choose force setup on all cars. That will ensure everyone is using the low downforce LM24 aero.