Just a little something to think about:
Tisas/Girsan are made in Turkey and are forged frames and slides.
Rock Island and variants are cast and made in the Philippines.
The forged parts will hold tighter tolerances for a longer time.
I have been using the ISO Tunes Caliber BT buds for a year or so. I just ordered another set to use at work. 12-13 hours per charge. The case holds another two charges in its battery. They come with different size and material inserts. Same price range as the Axils.
Bend the left leg back about 1/16”. Make the bend as low as possible. Lay the spring on it’s side and trace the shape on a piece of paper. Use that as your guide. Measure the change at the very top.
Too much bend and the hammer will start to follow the slide.
Try tightening the ejection rod. It’s a left hand thread. If it backs out, the locator pin on the rear of the cylinder won’t get pulled far enough out.
EGW ignition components are the gold standard among us action shooting guys. Hammer, sear, disconnector, sear spring, and main spring are all included in the kit.
FYI replacing the sear may require some fitting of the thumb safety or even replacement.
More than likely the burr is created because the mag spring/follower isn’t applying enough pressure on the slide stop. If the slide stop only moves enough for the beveled edge to enter the notch, that would definitely cause your issue.
If you can get ahold of either Wilson or McCormick mags...
I have always had a 1911 in 45. It’s gonna be real hard to beat my STI Spartan for accuracy and smoothness of operation. BUT when I run across the right 9mm 1911 at the right price, the Spartan will have a roommate.
I have shot quite a few 1911s in 9mm, most don’t come with the right recoil...