You might be able to lift the arms one notch on the splined boss to stop the overlap with the frame. Take one arm off and see how it sits if you lift it one spline. It will sweep slightly further on the other end. If that works do the others the same. Watch the centre blade closely and see if the bias is the same in each direction. The other option is to reduce the pressure slightly by bending the arm away from the screen. While the arms are off you could swop the positions to see if the centre arm is happier at one end.
