I have one reel head ( fairly new reel ) that won't keep a c-clip in . The original one was forced out from a jolt of some sort causing the seat area to be chewed up a bit . I tore it apart to day and I'm trying to clean up the grooves with a hacksaw file ( perfect fit ) . I 'll have to wait and see if it works . Also one of the guys on the tech sites posted that their is 2 sides of a C-Clip the sharp ( non rounded ) edge should be facing out . Hmm , Learn something new everyday Passing it on .