First, you remove the slide. At the rear of the slide, you'll find the part of the striker that projects downwards(little square doodad). Just forward of that, you stick a small screwdriver or punch into the slot, and push the striker sleeve forward. Now you can slide the endpiece(cap on the back of the slide) downward. BE CAREFUL. The striker spring will always aim the striker towards your eye, no matter where you hold it. Keep your finger over the back of the slide as you're doing this. Once you have the striker, its sleeve, and spring out, you can remove the extractor spring and plunger assembly rearward(it'll be on the upper right-hand side of the slide). On the underside of the slide, right next to the extractor,you'll find the firing-pin lock(little round button-looking hickey). Press it in, then you can remove the extractor. Be careful-the firing-pin lock may fall out-just pull it out with its spring. that's all there is to it, guy-as far as a buffer-I dunno what the guy was talking about.
Your problem may be another one of those Wolf-ammo-related incidents. Wolf ammo has a laquer coating on its case, and if you shoot a bunch of rounds and heat your gun up, it has a tendency to rub off and stick to the chamber, causing a gummy buildup that causes feeding/extraction problems. First, look at you extractor real carefully, make sure its not bent, broken, spindled, folded, or mutilated. Make sure its spring and plunger are are springing and plunging freely. If they're OK, try cleaning the chamber real well with a good solvent.
Hope that solves your problem, good luck!