I tried mounting my 240 Germinar (in modern black Compur 1) into a #1 Technika board, but when I tighten down the lens nut it doesn't come to a hard stop, like with a Copal 1. Rather as you tighten the nut it compresses the aperture ring against the lensboard, preventing one from setting the aperture. I'm sure I'm not the only one who has discovered this. Am I missing a spacer ring, or is the Compur 1 board subtlety different from a Copal 1 board, or something else? Thank you.
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