I originally set up my mags with Springer base pads. I could only get to 23 if I used Grams guts. I tried the TTI bases, and 23 was easier to load to, but I was curious if I could get there using the stock spring and follower, and sure enough, 23. I have 8 mags set up this way, and all work as they should. Good luck, but I didn't find it hard to get 23 at all. Borrow someone's LULA, load them to 23 and let them sit, they should loosen up. Like I said, I can do it by hand, but I wouldn't want to do it all day at a major.
Plus I hated that little set screw in the Springer pads.