I would like to obtain a recessed lens board for use on a Horseman VH. The boar d measures 80 x 80 mm. B&H does not list a recessed lens board as an option in its catalogue. Does anyone know where I can buy one, or have one made? I'd lik e to use a 58 mm lens on the camera. It works adequately with a normal lens boa rd, but barely. It requires that I place the lens only about two thirds on the front focusing track and the movements are then restricted. A board recessed ab out 7 or 8 mm would be ideal. Any ideas?