Time to make yourself a spacing bracket, with the additional locating hole to prevent the whole dynamo rotating.
You are a genius! Thank you. Must use my brain more. Unfortunately do not have any stuff / tools here; just been to LBS and they have been useless (well I did get a acorn nut I needed so not completely useless).
@mespilus started
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Time to make yourself a spacing bracket, with the additional locating hole to prevent the whole dynamo rotating.