I was being sarcastic, those screws are a pita. Try turning them counter clockwise about a quarter turn each at a time and get the mute so that it’s the same height on both sides. And then raise it a little at a time keeping the mute even side to side. If one side of the mute is higher/lower than the other it causes the screws to bind so you have to be careful to raise and lower it evenly.Screws don’t work…I think it is unthreaded below the end of the screws…