I recently acquired a Kodak Master View 8x10 with a modified lensboard and a Fujinon lens mounted in a Copal 1 shutter so I know I need to manufacture a lensboard with a 1 and 1/2 inch diameter hole. What I would like to know is what are the lensboard hole diameters needed for other shutters in case I would like to add a lens or two that would fit the lensboard that came with the camera. Thanks.