I'm not sure the red Loctite is going to give a proper bedding. It acts as more of an adhesive than a bedding compound. I've used JB Weld to good effect. Basically, you use a lubricant to stop it from adhering to the top of the action (shoe polish works well) and from seeping into the screw holes. Then you screw it in with one screw and let it almost cure. This lets it adhere to the rail and fill the gaps between the rail and action without torquing the rail out. Then you pull it, clean up the epoxy while it's still somewhat pliable and let it fully cure.
There are a number of videos out there on how to do this.
There are a number of videos out there on how to do this.