I have a long sheitel and it started matting in a specific area. Like knotting badly, and I brush it out but it just mats again 5 min later. Only in one section. I just had it washed and set and it came right back. Its about a year old and only started doing this the last 2 months. Is my sheitel macher doing something wrong? Is there a way for me to treat it? some product I can put in at home? does that section need to be replaced?