Kostas,


Do you mean you are closing the adjustment screw?

This screw should be very close to flush with the surrounding surface.

You should not be able to directly push it, or even to see it, or there is something missing (the adjuster screw...).

You can read the *.pdf manual [link=http://www.ysperformance.com/pdf%20manuals/FZ63.pdf]here[/link] (it is the older .63FZ, which is identical to its older brother, the .53FZ).