I have used clear finger nail polish but don' trust it. I was using bohning fletching glue cause its gooy and seems to stay. Just curious what the smiths use on here.
I have used Hard as nails clear nail polish and never ever had a screw come loose. Whatever Remington uses at the factory comes off with acetone same as the nail polish. You don't want something too aggessive otherwise you never get the screw to adjust properly. If you want to use loctite use BLUE.