I was right there with you a month ago. I read and watched allot of stuff on f1 setup and so on. low speed is primarily a mechanical adjustment in the car to get grip. High speed is primarily adjusting the aerodynamics to get grip. And in between you probably know. I struggled for weeks on a rear grip issue in high speed corners. A friend (marcos) told e to get a neutral body. I did and it worked. I cant say i completely understand aero yet but a body switch stopped my car from losing the rear. Not trying to argue. I was right with you a couple weeks ago. Maybe a body will make me fast but i am happy it gave me the grip I needed.