I have a Schneider 90mm f-8 mounted in a Copal 00 shutter on a flat board. The problem is that it is very difficult to get a cable release attached. Is there an adapter like the ones made by Toyo which mounts under the lens and then screws into the lens? Does Linhof make the new boards with the quick cable release buttons that will work on the Copal 00 shutters? Or any other suggestions?