How to adjust SIDE to SIDE height 1997 Activa Xantia

[citroenroen]

My 1997 Xantia Activa is LOPSIDED! at normal ride height . It sits higher on Driver's side than on Passenger side .
This seems to be mostly in the front of the car.
If I understand it correctly, only the ACTIVA has 4 height correctors : is this correct?
Am I correct that in order to level the suspension I will somehow have to adjust the 2 front height correctors while the motor is running and suspension is set in normal height position.

Would someone here have the correct height Specifications for the 1997 (Jan 1997) Xantia ACTIVA? and tell me how to go about doing it?
Pictures would be most appreciated.

[xantia_v6]

There is a quick guide at viewtopic.php?t=29374

There may be a more detailed guide elsewhere on the forum, but I can't remember where.