Wanted to come back and report. I ordered 3 of the new pads and put them on my "rebate" mags that finally came 14 weeks after I turned the rebate in.
Installation was easy. Mags loaded up fine, no whacking necessary. All of mine are tight, getting 23 rounds in each, but I can't imagine them loosening up enough to get another in.
On the first range trip I had a couple problems: 1)On one, only once, the follower/spring bound and wouldn't advance. I whacked it on my leg a couple times and it came free. I haven't been able to repeat it, so I chalk it up to "break-in".
2)When doing "combat" reloads (slamming the mag home so the slide stop releases) and having a half full mag, the first round tends to nose dive and leave you with an empty chamber. When the mag is full, it's not a problem.
That said, I'm super happy with them. I haven't been able to get to a competition yet, but training with them has gone well. I won't use them loaded to 10 rounds for IDPA because of the above problem, but I have other mags for that. Thanks Taran and crew for making a great product!