I really don't have a dog in this fight. As a former manufacturer, permit me to share what I believe may be happening with the SA-35's production. I have had an issue with mine that several others have documented, as well. In my case, the extractor pin hole was ever so slightly off. The 'smith said, in his opinion, it had probably happened during the CNC milling process. Now, in my 35 years of manufacturing experience, when we shipped a product that had issues, we'd get the customer to return it and our people would make the necessary repairs. This process was terribly expensive and we lost money on that transaction. We figured we'd have to manufacture six new items to dig out of the hole one problem cost us. I wouldn't be surprised if Springfield slowed or paused the production line to find out where the quality issues lurked. They brought this pistol out at a remarkably low price point and, probably, cannot remain profitable on this line without finding solutions.
Of course, I could be wrong. As my wife has pointed out, "You're rarely right and seldom in doubt.
Mike