If you think it's fletching contact spray your rest and riser with atletes foot, tenactin or any type of powder and then shoot your bow and look for lines. what type of rest are you using?? make sure if it's a drop away that it rises up the last 1-1/2" to 2" prior to full draw. I've seen several shooters rest tied off wrong and they start rising at the onset of the draw making it virrtually a fixed rest.