Looking at your malfunction and feed lips,as Dahermit explained very well,
The extractor MUST hold the case to the bolt face through ejection.You have inadequate extractor tension.
As Dahermit explained,if you have a round in the mag,the case is supported by the upcoming cartridge.
What your pic indicates,the case head dropped down to the follower,down in beyween the mag lips.The case mouth was still high,and caught the slide port as it was coming back.
The force of the recoiling slide violently forced the width of the case head through the mag lips,spreading them.
So the idea that Wilson is selling soft mag lips is wrong,too.
To gunsmith,you need some of the skills of a tracker.You have to be able to look at the sign,and ask "What happened?"
And you have to understand the function and design well enough to tell the story.
I can run a visual cartoon in my mind of that whole event.
Getting frustrated and tight jawed won't let the cartoon form.Be curious.Listen.
Another path to disaster is "I'll try this" and just filing,or Dremeling,or changing parts,without really knowing why.
I'll tell you this,most often,if I takeany metal off,it is because a micrometer told me "Take off .0047" and I use a Bridgeport or lathe every chance I get.
Or I put Prussian blue on one part,assemble the parts,and the blue will transfer to a high spot.I know"File just a little here" and try again.
I know what to take off,and an idea of how much,or I KEEP STUDYING.
No "Cut and hope"
Sometimes,I even ask He Who Knows More than I do.
We have several of those here.Lots.