I bought a new Glock 17. So far I've put about 700 or 800 rounds through it. I seem to have a problem with the gun tossing brass back at my head and in somewhat random directions. This has been an occasional problem from the time I bought the gun but it seems to happen more frequently lately. When the last round ejects it usually ejects just an inch or so above the slide, usually straight up, like there is very little force propelling it; sort of wimpy. I've tried adjusting my grip on the gun, same issues. My wife shot the gun, same issues. This is the first time I've experienced this with a Glock. I have a 26 and a 19 and a 30 and don't recall either smacking me with brass. Any ideas on which parts to look at? The extractor? Recoil spring? I have 5 magazines and seem to experience the issue with all magazines. ideas?