The problem could be the base setup.
We already know that the initial oil/spring/pistons combination is not a success.

My impression is that the roll centers are off the charts compared to the other chassis. With initial setup (3mm) the upper and lower arms are parallel, I've never seen that on any other chassis.

My plan is to put the central aluminum beam and work on the roll center. The problem is not the car it self, it is the balance between the front and the rear.

But for the moment, I'm looking to change the bearings in the rockers by brass bushings so I can have less play (I can make the ground clearance by 1mm without any movement in the shocks, glups)...