I just bought a used Alpha dropweight stringing machine. It looks like this Eagnas machine. Linear gripper and 6 point mount. http://www.eagnas.com/store/product_info.php?cPath=23_30&products_id=206&osCsid=c3308d58c454aaad387311886e8f99a8 I started stringing for my APDGT racket. I don't have starting clamp. So, for starting main, I used the YULitle's method. http://www.youtube.com/watch?v=KO9qWaom4cg&fmt=18 But I couldn't find a movie or instruction about how to start cross using starting knot with flying clamps. YULitle uploaded a video for that using fixed clamps. Also, I need to string Prince Exo3 racket later. Do I have to buy starting clamp for 50-50 method with flying clamps?