I don't need the red and UV capabilities of the D710V, so I ordered the OrcaTorch D530V. I am not happy with the sloppy fit between the ball joint bracket and the body of the D530V. There is a 4mm gap, and as a result the light wiggles around too much in the bracket, even if the set-screw is tight. After some research, I learned that the bracket fits lights from 23mm to 27mm. The D530V has a 25.5mm body. The D710V has a 27mm body. The bracket has an inside diameter of about 29mm. This explains why the D710V fits better than the D530V. I also wish the bracket was closer to the lens, which would make it easier to keep the front of the light behind the front of the camera/GoPro. I'm sending this one back.
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Couldn't you 3D print a spacer?