Well, I'll try and get to the range this week, but likely won't be until Saturday and test the minor cleanup I did on one of my LAR-15s. It's the last one that I know that caused this particular problem. Used a small sanding drum on a variable-speed Dremel on a low setting so I wouldn't take off too much metal. Basically, I chamfered the front inside edge of the magazine, and deburred the inside of the feed lips, went a little heavier at the very front of those feed lips to let the casings slide out better. I can't see anything wrong with the followers besides the ugly grey colour.
Judging solely on loading and then using the back of a marker as a 'bolt', they now feed cleanly and much more smoothly from the mag, no snagging or dragging. With use, I imagine they will wear in a little better even. Only took a couple minutes and seems more reasonable than changing out followers/floorplates. If I run a box or two without a FTF I'll consider it a success and do the same to the other three. They were all from SFRC, by the way. Not their fault, it just looks that since they are stamped steel, there were some sharp edges that needed smoothing out. I wouldn't even call it a manufacturing 'defect' per se, just a normal consequence of mass production in the 21st century. For $24, what do you expect? I've had more troubles with $60 Savage 5-rounders.