Sounds like it would have been a lot easier to just spend 10 seconds grinding the follower spring on a bench sander for a perfect fit to whatever size the groove was. But frustrating nonetheless.
“Primary extraction” has nothing to do with the “extractor”, it is the caming action of the lug recess and rear action bridge which gives you mechanical advantage to pull the case out of the chamber, as you lift the bolt, before you pull the bolt back. I have a couple that have zero primary extraction because the timing is so far off that the cam never engages. But I’ve also never stuck a case, and all my handloads have flat primers.