Is loc-tite the same thing as glue? My impression (and that's all it is) has loctite in a different category than super-glue at least...
Anyway, super-glue is good at bonding with plastics and seems to do well on the anodized or otherwise coated metal rod. Even if it only bonds with the plastic, it results in a tighter fit around the metal rod so there's not the possibility of play anymore.
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"c" is not a unit that measures tire width