Not much of a sense of humor today.But and still, not 100% as the disc itself is not perfectly centered relative to itself. Even if you get this down to centering the disc as much as this complicated machinery will allow, it will always be less than 100%.
And if you think I'm talking about angels dancing on the head of a pin, how do you think I feel about people claiming to have ultrasonic hearing?
Not sure what you mean by "the disc itself is not perfectly centered relative to itself"?