Taurus's PT1911 has a spring loaded pin inside the slide to hold the firing pin back while you slide the rear plate off. This pin also holds the extractor in place so it can't be removed till the pin is removed. Normally the pin just pops out when the firing pin is removed. This time it didn't.
As for extractors I know they all need "some" fitting and I've already finished replacing the broken extractor.
This is who we are, what we do.