[Uwon]

Would be helpful if you could mention your model.
In the 997.1 at least, the molding is held by three screws/nuts-a torx in the centre and a 10 mm plastic nut about 6" from each corner (under a flush plastic cover that slides off). There is some play for adjustment particularly by the nuts. loosen the nuts and screw and shove the molding towards the windshield and re-tighten.
Are you happy with the rubber around the windshield? The aftermarket stuff is crap. The OE rubber is the only way to go.
Hope this helps.
Cheers,
Johan