I have the Freedom Arm HD and an Acer XB270HU. I cannot adjust the arm such that it will remain fixed when I move it vertically (up & down). I have used the given tool to adjust the spring to L as far as possible and a considerable way towards H. Not sure which way is correct. In either way, the monitor when pushed down (with considerable force) will rise up to its initial state. Am I adjusting the correct tension lever? Should I be adjusting towards L or H? And should it take a considerable amount of effort to push the monitor downward?
Frustrated as this arm is noted for its flexibility.