You should subscribe to The Yorkshire Terrier Magazine. Some of the breeders have made Yorkie grooming videos in the past and may know where to get one. I know that Rothbys made one years ago and so did Kesar. I think that Greg Larson, a pro handler, made one also. I found one on e-bay once too. Also go to
www.sweetyblue.com. Sometimes they have them you can order. Lynn