Originally Posted by
DPRacing
I drive outdoor on a technical track, the handling is good, .. but my 418 overturns as soon as I go on the curbs, what would you suggest? I've tried many things already

You could try drilling the pistons holes out to 1.1mm. That will give less pack for high impacts like running over curbs and should keep the car more grounded.
You may or may not have to make oil changes to compensate for reduction in damping.