yes i have tweaked the extractor so it is properly holding the cartridge against the slide. as i remember it it is to hold it enough to keep it in place while rotating it, but if you give it a bit of a shake then the round should fall out.
I try an empty case first; the case should be held solidly enough that it does not move when the slide is tilted or rotated. Then try it with a loaded round; the round should "droop" away from the breechface from the weight of the bullet, but it should not fall off the extractor hook. That's a reasonable place to start.