It seems the back knee bends inward at first, and I have to wait for my turn to get going before I came bend my knees right
i do not know how to post a vid from youtube,but there is a vid titled "how to snowboard: experiment with your knees" it was made by Snowprofessor. check it out and see if that can help you.
2015 Rossi One Mag 159
2015 Capita Charlie Slasher 161