So far the consensus seems to be 8 round flush fit magazines work fine when new, but soon become unreliable. That makes perfect sense as the lighter gauge spring required to fit 8 rounds in the space of seven suggests the spring is rather wimpy compared to a seven round spring. I was skeptical of gettin' somethin' for nothin'. It's never a reality. The solution is simple enough, purchase four Wilson and four McCormick magazines and get used to reloading more frequently. I'm babied by shooting a 9mm double stack with four magazines. I can adapt!
Thank you guys for steering me clear of the 8 round mags before I wasted any money on them!