"I am a prisoner in occupied Kali. I could go to Arizona and buy PMIs I guess. But, I actually liked the 10 rounders. You can get closer to the ground with them. "
I see you have a sense of humor!

You're right, though, I see the logic of what you're doing. I have been pleased with my 10 round ProMag mags. It's odd that you've had to modify some of yours. I have not had that problem, but I only have 3. I shot them again this weekend to verify my 100% results earlier; all passed muster again.
I have yet to insert one of the magazines with a round in the chamber. I've not tried that with the Mini. If one couldn't insert a fully loaded magazine with a round in the chamber of a handgun it'd be a no-go. That's a good point, and I need to try that in my Mini next time I shoot.
Thanks for the CTD link, Dave.
BTW, the Otis cleaning "system" is awesome. One of the best accessories I've ever purchased. Costly at about $40 with shipping, but it bests the heck out of trying to clean the Mini (et al) with the typical cleaning rod.