I think you and I may be talking about different things. If you follow the leg of the extractor which contains the claw down to where it turns 90 degrees away toward the pivot pin. You will see a small pad on that arm. If you remove material from that pad the extractor will swing further in. My guess is the pad is there to allow for adjusting travel. They forgot to tell the Glock Armorers about it. Other wise what is the function of this pad?