First, I am not saying the blade won't work, and I can't really judge it's geometery without seeing better pictures of it on the grader. In the video, it is on a 3 point hitch, and the draw bar can be lowered at the front. Now I know that other grader operators know what I mean, but in order for the blade to work, the draw bar needs to be level from where it pivots behind the front wheels to the center of the blade. A conventional grader blade will work with the draw bar at any angle because you can compensate by raising one side, and or lowering the other. Kind of like picking the blade up for walking her up and down the road. If you raise the blade up full height, and turn the circle as tight as you can, the leading edge of the blade will be close to the ground, and the heel of the blade will a lot higher. With the draw bar off level, and this blade in full V, front or back, the center will either dig in, or raise up, and no matter what you do to the right or left side, it can't make full contact. The only way it can work in V, is if the blade can stay 90 degrees with the ground, or if the draw bar can be kept level by adjusting the pivot in the front...Someone tell me that the know what I am trying to say.....