Between the shutter and lensboard. Dumb question of the day.
If I tighten it until the lens doesn't rotate when turned I have to force it pretty hard. General wisdom says not to tighten metal against metal this tight, especially when dealing with anything remotely fragile. Am I going to break something or should I just tighten real tight? Yes I know this is a dumb question, but I'd rather be embarrassed online than in person so I'm asking here.
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