I must admit my CZ85 will pull a stovepipe jam occasionally (maybe once in 300?) so I figured I'd clean behind the extractor and polish the slide back face a bit. Used a popsicle stick narrowed (using diag cutters) and thinned a bit (sandpaper). Now I just wrap a small piece of #600 paper around the tip of the stick and lightly polish across the face and behind the extractor. A toothbrush and some acetone does the rest.