you should tighten then up a bit more than hand tight. Never had to use loctight.
Dave
It's a TOY, A child's PLAYTHING!!! (Woody from Toy Story)
Tightening them with a screwdriver is all that is needed. If they still come loose, check to make sure the rods are not binding at all, by turning the wheels by hand. Take the motor out if necessary.
Larry
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