If you put some plumper's tape around the screw and then put some locktite 270 on the tape area ,then put the screw back ,it will work . Aslo this then make a new thread and the screw will not back out, just remember to let the locktie dry first , aslo do not use much put some 270 on a earbudd then cover the screw.
The other thing is to get thing call a heli coil ,it looks like a spring . You the heli coil in to the damage thread and then you are sorted.
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