Looking at your photographs, the extractor claw looks to be rounded over on one side of the claw, is this accurate? If so, then this may be the source of your issue.
Replacing the extractor claw can be difficult. The pin is almost a blind pin. I say almost since you can access the side you need to tap from, but you essentially need a curved punch. Punches don't like curving and generally break making it a consumable tool. If you need help with this, I can take care of it for you if you like.