Hi Andrew
I cannot offer any help with your specific problem, but double check your M42 assumption as a lot of my Vixen eyepiece adapter accessories are actually M43 for my Vixen astronomy gear.
And, the Vixen M43 is not the same as the Takahashi M43 – one must be 0.75mm and the other maybe 1.0mm thread?
I hope you find a solution.
Cheers
Dennis
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