For a two piece job how does the around the world technique apply? or do you just finish the mains and you tie off both knots? in addition Yulitle shows a video where the crosses should also be started off from the middle of the racket? just like the mains? Any other differences between one piece and two piece stringing jobs? And also what are your reccomandations? poly on mains and synthetic gut on crosses? and how much lower should tension be for poly/synthetic gut? thanks.