I tried to tighten the crank at the base, but the allen key hole has worn and the key just turns freely in the hole.
Sounds like it could do with some investigation. I guess you'll have to drill the bolt out and stick a new one in. Are the extraction threads OK?
@Butters started
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Sounds like it could do with some investigation. I guess you'll have to drill the bolt out and stick a new one in. Are the extraction threads OK?