When I first got my CQB (new), I ran 500 rounds through it to break it in per Wilson's instructions. At about 250 rounds, the slide locked halfway in its travel. The Shok Buff had started shredding and some little bits got between the frame and slide. Removed the Shok Buff and fired 5,250 rounds through it over the next 4 years without a single malfunction. Then this:
View attachment 7277060
Look familiar? This was the result of working up 45 Super loads to run through it for hunting season. A failed experiment. I put a 22 lb. recoil spring and a 26 lb. mainspring, but it still wasn't enough. The load that did this (twice) chronoed at 1015 fps -less than 100 fps faster than your Ranger T.
You told me in an earlier post that you had a 15 lb. recoil spring in there AND that it hadn't been replaced by Wilson or you and had who knows how many rounds on it.
So here's what happened to your gun: you didn't bother to make sure you had the correct recoil spring for the ammo you were using. You didn't even bother to do the basic MANDATORY safety maintenance of replacing a worn out recoil spring. The weak spring/hot ammo rounded off your extractor and caused your jam. Wilson didn't do anything wrong, you did. The rep's tone in the email indicates that he knew your negligence had caused the issue, but they fixed you up free of charge anyway. Perhaps you should rethink your plan of selling the gun and badmouthing a company that did you solid.