Thank you all for the positive feedback. As I said in the first post, I don't want to answer in details to some questions, because I prefer that each of you can discover something more about the behavior of the car laps by laps.
One little hint: do you know what is the max degrees allowed for the rear wing during the races, IRL?
5 degrees (only), to have more spectacular races, as the Organization stated. Think to what a lower load on rear affects the balance of the car and you will understand more about the overall behavior of the car!