thank you for sharing your knowledge with us. I will order a new valve and replace it, the fluid was already changed to LM.
What is your experience with the valves, are they reliable once new ? I got a information from a 430 owner who got 3 new valves mounted at a offical F-Dealer during the same day once they found one which was working. Maybe they used the wrong (=old) torque spec. for mounting ?
Should the valve be put into hydraulik fluid for a minute before mounting to make sure there is at least a minimum lubrication during the first actuation ?