If you play the 13th fret and get the same pitch as fretting the 14th fret, the 14th fret is too high relative to the 13th fret. If it is just on the high e string, chances are that the end of the 14th fret isn't fully seated, so that it is sticking up. If you look at the fret carefully you should not see any space between the bottom of the crown of the fret and the top surface of the fingerboard.
You can take the eraser-end of a pencil and push downwards on the 14th fret to see if it moves - it shouldn't.
Steel wool isn't the answer, regardless.
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