Hello Forum Friends

I was wondering if I could send out a question and see if anybody has any answers for me? A friend of mine in Vancouver, Canada is currently looking for an Hung Gar instructor. He is come across a sifu named Grandmaster Stephen Chang. I know that he is from a Lam Sai Wing Lineage. I have never personally trained with Mr. Chang but he has been in Vancouver for a long time and has appeared in many Hong Kong and American films. Mr. Chang says that though there are many masters of Hung Gar, there are very few Grandmaster's such as himself. Is fees seem reasonable to me, but I don't know what advice I can give my friend as I do not know him or any of his students. Here are the questions. 1. Has anybody had any experience with or know Grandmaster Stephen Chang?
2. Does anybody know who his sifu was? and.. 3. What exactly is the difference between Master and Grandmaster?

Thanks! and I hope to hear from you soon!!!!