Boiling them first in your long tank, as you would to rust blue them, will often loosen them for removal. Kutter's method with the angled side-grip pliers (e.g. dikes)will often wiggle them out easily, once boiled. Different expansion rates between the synthetic sights and the surrounding metal may be doing it, or the heat may be breaking down any fixative that's holding them in. Not sure which, but it usually works.


Robt.