Hello, kids. I bought a used Supermatic shutter to replace mine (diaphragm leaves buckled), and put the cells from my 152 Ektar in it. Hmmm. New rear element jams the diaphragm leaves... Does anyone know the measurement, front lens rim to rear lens rim, I should aim for? In the old shutter, the distance was 36.96 mm, or 1.4550 inches. Thanks in advance -- I know this one is obscure...