#1 04-25-2005, 10:27 AM tongzilla Senior Member Join Date: Apr 2005 Location: London, UK Posts: 825 Make sure your head is not leaning too far forward or backward. Head and feet should form a stable TRIPOD and if you join the lines up, it should form an isosceles triangle. tongzilla View Public Profile Send a private message to tongzilla Find all posts by tongzilla