Hello, New to the forum. I have a Mark III pistol. Never had any issues with it. Probably has around 500 rounds through it. All of a sudden it won't extract/eject. It fires and the empty case stays in the gun. I've cleaned it thoroughly, including a detail strip of all the bolt parts. Everything feels smooth. It will manually cycle unfired rounds without any problems. The extractor spring pressure feels just like buddy's gun. I've only used it with the "golden bullet" high velocity ammo. For testing I also tried Geco 22. No difference. It doesn't matter if it's 3 rounds or 10 rounds in the mag. It's as if the bolt is only going back a little bit and putting the same casing back into the chamber. A fresh round doesn't get stripped. Anything I can try next?