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The corrector is sort of sandwiched between the internal and external fittings of the secondary holder. If it continuously spins, the only way to tighten it is to take off the corrector and hold both sides of the assembly/holder.
Luckily on mine, gentle clockwise rotation of the external ring, managed to grip and tighten somewhat. Non gentle counterclockwise turning, to install a hyperstar for example may do it again though. We will see.
Zuts, I’m interested in your downsizing aperture. Are you predominantly an imager?
I’m thinking of going the other way, but oddly, I think you gain much more by a c11xlt to c925 edge hd, than a c925xlt to a c11 edge.
Hemi
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