Possibility -since a few of us have tried a few different extractors, with the problem persisting, could the port the extractor sits in be machined too large towards the back rather than the rear of the extractor being too small. I have one problematic glock out of the few I've owned over the years and its pretty bad, I just find it unlikely I have gotten two out of spec extractors, but its possible. If I still had my gen two 19 or my 34 (which both worked flawlessly), I'd try those extractors, EDP's and SLB, but stupidly I sold them before I acquired my 03/12 test fired 19. Also my current 19 is the only glock I've owned that dents the cases towards the mouth Wanna kill these ads? We can help!