Hi! @tiger1962 Thanks for the response! I'm literally testing those numbers right now as I reply. I found the biggest difference is made while on take-off and landing roll is the "ground_crosswind_effect_max_speed" which I'm trying to set near the rotation speed of the aircraft. Also for the previous changes you mentioned in the beginning, do they still apply when using the "Modern" flight model? Because according to the SDK Documentation here https://docs.flightsimulator.com/html/Content_Configuration/SimObjects/Aircraft_SimO/flight_model/aerodynamics.htm, it says it only applies to the Legacy Flight Model. I really didn't know about 2 types before today.