floyd rose

i actually only need the locking part by the headstock but im fine with replacing it completely too. i think mine is a liscensed version

The floyd rose tremolo bridge is held in by two six-cornered screws, which regulate the hight of the bridge. But the corners are worn out so that the screwdriver just circles in it, without moving it. Can anyone tell me, that if I disconnect the bridge from the back, take out the tightening...