Got myself a tripod for Christmas and have an issue attaching the quick detach plates to canon ftb. How do I do it? I thread the screw in just fine, but the camera still turns and its secured. The detach plate has a joke of a spring loaded stud in it that is supposed to hook into a hole to prevent rotation. That's how it works when used on my Vivitar Series 1 630-1300 telezoom lens. Any suggestions?