We used to stick 'em in with a good dollop of that foul smelling GUM, arabic. Or as those more couth Armourers used to call it, BUM, arabic! Slosh it over both sides and onto the box lid and press it on. Same as the scope box too. Make sure that you wash your hands afterwards or your wife will think that you've been playing with a ........... Anyway, you get my drift!