On the Mamiya Universal press and the pinhole on a body cap, what type of results did you get? I've got one too and have been studying drilling a hole in the body cap and putting a pinhole on. I tried that with another MF camera and got interesting results. I used aluminum from a pop can and made a pinhole and the results seemed creative. Am wondering about the Universal, the body cap I have extends and is not level with the placement of the lens mount.