The trick is to be absolutely positively sure that there is no oil or grease anywhere on the threads of the fastener or case hole/ nut. Loc-Tite of any color will not lock against a lubricated thread very well at all.
Last thing, if you use it in the future, be careful with Loc-Tite 271 red. Concerning fastners of 1/4 inch or 6mm (stock HT engine fastners) the Loc-Tite can be stronger than the fastner and you can snap off the fastner before the Loc-Tite releases.