I got a new Husqvarna weed eater a month ago and have nothing but problems with the head. There's 2 layers inside the head but it only feeds one layer and when one side of the sting gets low it doesn't feed anymore on that side and within maybe 3 to 5 minutes the other side doesn't feed anymore and the inside string is basically knotted up and damages the line. I was in the lawn business for 5 years and never had this happen
not that i have seen put if there was it would be here www.ereplacementparts.com/search_result.php?manufacturer=Husqvarna&show_only=models&q=Husqvarna+rapid+replace+universal+weed+trimmer+head+