After getting my new TFO sights from AJames, I went about swapping them out. A little banging on the old, a little filing on the new, and the rear sights are on. The front sights, though, are proving more problematic. Despite being pretty aggressive, I can't get them to break free. Any suggestions, or should I just keep wailing on it? I AM trying to remove them right to left, by the way.