I have had some ejection issues, blah blah blah. (same old boring complaints) But today I had some time to do some trouble shooting. I separated spent cases that ejected over my head from cases that ejected correctly. The cases that went over my head (or hit me) had a deep scratch or abrasion mark on the case rim, so I looked on my slide to see if I could find where they had been hitting. Cases that ejected correctly had the scratch, but it is nowhere as severe. Right on the edge of of my ejection port (just above the serial #) there is a rather noticeable area where brass residue is accumulating. As if the casing are scraping against that area on their way out of the action. (it's not flakes, it residue that won't come out. I tried some Hoppe's and it barely took some off but not all the way.) I am thinking a lower ejection port could help a lot of issues, or it is one of the causes.