Height problem after replacing sphere, C5 X7

[mvts]

Edit: C5 X7, 2015.

I recently replaced one of the front spheres. After that, the car is significantly higher in the front than it was before.
What could be the cause?

Procedure:
1) I depressurize the system using Diagbox
2) Wait 3 minutes
3) Remove the sphere and replace it with a new one.
4) Wipe it clean and start the car
5) The hydraulic pump works and builds up pressure and the image rises.
6) Exercise the car by switching between the lowest and highest position.

But when I put the car in normal position, it is higher in the front than it was before. The rear looks okay.

[mickthemaverick]

Which car is this on?

[mvts]

Which car is this on?

Sorry,
C5 X7, 2015

[Kees]

But also the engine!!2.0 or 3.0?
Left/richt side?

[wurlycorner]

Is it advisable to replace spheres on one side, rather than in pairs?
I'd have thought just replacing one would be a bad idea because of pressure imbalance one side to the other.

[Kees]

@wurlycorner:
The pressure is always the same in all the spheres at the front and the rear, because in softmode the are connected with each other, but i agree it's better to change both of them.

[wurlycorner]

The pressure applied to them by the fluid would be the same, but the 'resting' gas pressure inside each sphere is different - because the gas is at a different pressure behind the diaphragm. It will compress the gas in the sphere to the same pressure, but you'll end up with a different volume of fluid and gas in each side. That means you will have a different length of 'travel' within the sphere and the relative volume change in the fluid that each side needs, to achieve the same degree of movement will be different (same in the cylinder, but different in each sphere)?
I think that would alter the effective damping rate from one side to the other, to some extent?
(The 'spring' pressure would be consistent though, because the gas will compress to the same pressure).
Though this is probably overthinking...