On another thread, GammaTech explained the purpose of the diablo and it made more sense to me. The diablo helps keep the consistency of the height of the string no matter were the tensioner is on the track. So for those of us without diablos, does it really make that much of a difference if our tension gripper is on a horizontal plane with the racquet? I have read here that some people with Wise Tension Heads lose their 360 degree capability. On my machine, the Wise Tension Head just clears the racquet so I do not have this problem. I have seen pics of modified dropweight machines with the Wise Tension Head added, and they made sure the racquet was right in line with the mounted racquet. But does gripper height really make much of a difference as long as we are stringing consistently? (Does a couple of inches of height make a difference) If the gripper is horizontal with the racquet the first few center mains do pull straight on. But once you start getting to the outer mains, the string will be pulled at some angle, and it increases the further you are from the center. Once you are pulling at an angle, it really doesnt matter if the gripper is horizontal to the racquet. Seems like a gripper can be anywhere on a 3 dimensional plane or angle, just as long as you are pulling the correct amount. Just curious.