I just recently watched Play to Win (4 parts on youtube) and heard about Roots of Badminton. I saw 10-15 minute clips of Posture, Footwork, and Hitting Technique. Does anyone know what the other roots are? These are old videos from Coach Lee Jae Bok. I can't seem to find any purchasable copies of his dvd's either. I'm 5 years too late, but maybe someone has a resource to point me to?