I've now read a couple times about .40's having brass to the face issues, and ejectors/ extractors being swapped by Glock to fix the issue. This is common reading for the 9's, but I just realized it could apply to the .40's as well. Is sending these in to be replaced simply to fix brass to the face? Is there anything else having these parts swapped will fix/ do for me? I've got about 2000 - 2500 rounds through my Gen 4 22, and this is simply not an issue in my Glock. I would assume that if I was going to have this issue, I would have by now? I certainly dont want to send it in for no reason, but don't want it to become an issue at a really bad moment either. Thanks!