How do you tune a Glock extractor? My G19 extracts just fine, but seems to like to ping me in the forehead sometimes. My G26 and G17 do not have this problem. I did a google search for this problem and found a lot of the same complaints but no solutions, except the Cylinder and Slide website listed a custom glock for sale with a radiused and tensioned extractor. Does anyone know exactly how this is done?