I use the Linhof cable releases on the Linhof boards with the built-in push-in f itting. My problen is that often the cable release does not release the shutter as the pin from the cable seems to not go thru the orifice in the board's push- in fitting for actuating the shutter. Additionally, the cable release does not seem to lock on to the fitting quite as firmly as it should. Is there a way of a voiding the problem? The equipment and has seen little use. Has Linhof made ne w versions of their cable releases or fittings?