About to string up this racket for the first time and I was reading in the stringers digest that when you do 2 piece stringing you should use a starting knot. I have never needed to use a starting knot when I'm doing two piece stringing so I'm a little confused by this. Does anyone else have experienced stringing the new pure Aero line.? I have not tried it yet so maybe I'm reading more into it than normal. But I'm used to just 2 tie offs for the mains and 2 tie offs for the crosses.