Got my SP Swing yesterday and strung an old racquet last night, but I had a couple concerns/questions during the process that I hope you guys can help answer. 1. How tight should the flying clamps be? The instruction manual said that if the clamps are leaving marks on the string then it's too tight. As I was stringing I was gliding my fingers over the strings and I definitely felt that the clamp had deformed the surface of the strings a little bit so I made them a bit looser but I don't know how to make sure that they are not too loose, resulting in loss of tension. 2. When starting the crosses, the manual states that the mains are enough to hold the tension when I have the first cross on one side of the clamp and a dummy string on the other. I was not comfortable with this, since I saw the clamp move a bit when I raised the drop weight. Am I doing something wrong or is this movement ok? 3. I was having a hard time with using the clutch as described in the manual. I found it impossible to lift the arm while holding the gripper after I drop the weight but if I lift the arm to near vertical position, it became a lot easier. Any advice on this? Thanks for the help.