I have sold most of the boards that I had and of all the boards, none had a notch. I know the significance of the notched hole in the board, but frankly have never seen one or for that matter found a need for one. I have found that most lenses fit just slightly differently on each camera and I would not want to be limited in how I can place the shutter on the board. If it is important that you have a notch, then use a dremel tool and notch the board yourself. If there is a screw on the shutter that is not allowing the shutter to lie flat on the board, then remove it and move on. All of the lenses that I have had the screw removed long ago or never had one.