So my strings are beginning to fray a bit, mostly in the lower third of the string bed near the throat area. I'm using a PS 85. I guess if my technique and footwork were better, the strings in the center of the string bed would be fraying. So my question is - does this mean I'm getting too close to the ball when I swing and not allowing a full extension of my arm when I'm swinging? If you were my tennis coach, what would you be advising me just based on this observation of where the strings are fraying? Thanks!