My sn: 5XXX Springfield Armory SA-35 has failure to extract problems. Intermittent, but the problem is there. I sent my SA-35 back to Springfield Armory customer service. They had it for 1 week, then sent it back with a note that they "tuned the extractor and fired 45 rounds with no problem". What does "tuned the extractor" mean? Does that mean my SA-35 will run as dependably as my Springfield Armory XDM Elite? My XDM Elite has run flawlessly for several years and several thousand rounds. An extractor tune up. Anyone with SA-35 experience and shooting experience have an opinion on this? I EDC to defend my family and others. Thanks.