When you have a mag inserted is the ejector sitting on the feed lip? If so you might have to bend it up a bit as well as closer to the bolt. Mine was actually setting right on the feed lip and when I cycled a spent round manually it was catching it on the bottom corner of the cartridge, I bent it up a bit so it was closer to the bottom of the bolt and it now grabs closer to the middle of the cartridge and gets a much better bit on it for ejection.

If you ask me the ejector design is piss poor because it bends so easily, a jammed round can easily bend that thing down and bam the ejector is out of spec.