I have a Wollensak Verito 14.5" f4 Diffused Focus studio shutter (#4) with an sticky shutter and aperture blades. Does anyone have ideas of how to clean this shutter? I have some experience working on view camera shutters, just not sure how to get into this one. Also, how does each studio shutter work? Is it one speed? The cable release socket is not the same size as standard cable releases, are there adapters available? I have been itching to use this lens. Thank you for any replies.