Rebound doesn't work on a Rock Shox Recon Air On my Trek Fuel Ex6 I have a Rock Shox Recon Air fork with rebound valve. The valve has a 2,5mm allen key for adjustment, but it seems broken. The Trek Suspension Setup Guide tells me to set the rebound to 8 clicks out, however if I turn the screw it does not click any more. Two months ago when I turned it it did click.

Any option to fix this problem?

UPDATE
The problem was in the screw. It was damaged. It wasn't griped. So the only solution was to carry it to a specialized bike store
Try to gently "tighten" the Allen setting all the way. Then try backing it out. I never hear clicks. I just feel them.