I have a really old Video 20 fluid head from 1985. Still works fine, but now I have lost the camera plate. I see that Sachtler still offer a fluid head called Video 20, that uses "Camera Plate 16 touch&go". When I measure the slot for the plate on my fluid head, the CP 16 seems a millimeter too small both ways. Does anyone know if this plate will fit my ancient Video 20?