Extractor worn???

[Wafavre2]

What going on when the extractor is all chewed up and wiil not extract the fired casing. I shot around 100 Wolf steel cased and need a new extractor. I have the spring with the piece of Oring inside the spring. It is a PF Super Match Bolt & Carrier with Nickel Boron Coating, Firing Pin, NiB Cam, Firing Pin Retainer.

Thanks for the help!