When you load a magnet, 3 things load, 1, a magnet, 2, a magnet base, and 3,  a magnet zone. The magnet zone is a circle that poser what part of the figure (or prop) the magnet should work on. It's likely this zone isn't including the nose of the figure and needs to be moved. The reason the zone may be in the wrong place is probably you're using a figure other than P4 nude man that the magnet was created for. It's fine to use a different figure, but you'll need to move the zone

In this second picture, the zone has been moved so the nose is affected.

If you don't like the shape created, you can move the magnet itself to change how it shapes the nose.

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