After calibrating in Calibration Sample scene, why aren't the tracking devices and hand models totally overlapped?

Please check all the following:

• Make sure the sensors are resting on the middle segment of your finger just above the knuckles. (Make sure the gloves you ordered are the correct size for you).
• The LED lights are flashing from all directions. (If the light is always on but not flashing, you have to demagnetize and then calibrate again).
• The tracking devices are mounted on the glove stably (make sure you tighten the straps), and make sure when you move your hands, the relative position stays the same between your glove and the tracking devices.
• Check that  you have successfully gone through the calibration process according to the video tutorial. Repeat B and P pose if necessary.