Andy-san I understand 430mm handgrip tube is too close to the rotating part. In case of this, it's very danger when you switch your hand from top handle grip to side grip. It's a bit tricky movement when you do this. Perhaps space between side grip and rotating part is too small to switch hands. Perhaps I do mistake for example hit my hand to rotating parts and can't hold grip cause of space is too small. Then my MoVI fall down... So I checked what length is better for me again. Then now I know also 500mm is fine for me. Even 55mm makes big difference when you hold heavy equipment with this style. Andy, how do you think if it's 500mm? It can be folded flat? And one more question sorry. Why top handle grip don't have rubber grip like a side one. I think rubber grip is needed for avoid slip. If it's for use C-stand, easy to remove end of rubber grip by my self. I really don't want to fall my MoVI... Thanks a lot for your kindly advise.