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Loctite is not a glue, it is a thread locking retainer based on an anaerobic curing acrylic. It cures (sets into a solid acrylic) in the absence of air, the more confined the space, the better it cures. It has no gap filling capability, in fact it may fail to go off, if there is space between the two components.
Now it's your turn, to tell us all about your radial engine.