Shun Tomizawa is a Japanese coach who worked in Canada. And is currently in Germany.
He has many MAG tutorials on his YouTube channel. Here are a couple of samples.
Click PLAY or watch it on YouTube.
Click PLAY or watch it on YouTube.
Fun fact. As a young coach, we took a team of Americans and Canadians to Netherlands for a friendly international competition. Moy won the AA representing France. He was already excellent at age-16.
Gymnastics Coaching.com 