After a range trip today, broke down my dw guardian 9mm. First time removing the extrator, and it was difficult to remove. Had to use some pliers to remove it from rear of slide after depressing hook into the channel. Cleaned out some gunk with the Wilson tool, swapped some springs, cleaned and functioned checked. All good so far. Loaded a magazine with critical defense and proceeded to manually cycle slide. The majority of rounds failed to eject and appeared to be hung up on the extractor and created almost a double feed malfunction. Tried cleaning extractor again. Same issues. Round seems to be hung up and casings seem to show some slight wear from extractor. Could I have frigged my extractor up during removal? It is also a possibilty I have just never noticed this malfunction due to always having the magazine removed when ejecting live round. Tried to replicated with magtec brass cased, malfunction occured just not as frequently. Never have experienced a live round cling behind extractor, any thoughts?