Well, we had a discussion a few month ago. It seems, the seat needs some kind of inital movement to work well. Basically you need to sit on the seat and move the seat to the very front and then move the seat to the far end position. The whole seat I mean, not only the back rest. I did the same and then it was ok. Give it a try.
Cheers
ALumni
Thanks a lot! I tried but it doesn't work During the movement forward and back, Have I to hold the seat lever or when I reach the end position have I to release the lever, and then hold again for the forward movement? However, in both ways, it doesn't work