Posted a while back about a problem I was having with 3 Beretta 17 round mags I bought from Beretta's website for PX4 .40 cal not taking full loads. After a little research, apparently the extended base plate had an issue with excessive flash which wouldn't allow the follower all the way down. Great. I figured out how to disassemble the mags (as I've previously mentioned this is my first firearm) and used my precious time and effort to fix Beretta's mistakes and shave the pertinent surfaces down. Now I could do a full load-out Awesome. Afterwards, during the process of fully stuffing the mags and then emptying them I've noticed another issue. When removing rounds, by hand obviously, after I push the top round out the following round will get stuck with the nose down and I have to bump down on the ass end to get it to pop into proper position for me to push it out of the magazine. Not being able to access a facility or area lately where I can safely/legally do practice shooting, I haven't actually done any shooting with these 17 round mags, but this seems like it might cause a problem with the feeding process. This does not occur when I am loading/unloading the two 14 round mags that came with the gun when I purchased it - they have been problem free.
Is this something that occurs when manually unloading a magazine? Is it something I can invest more labor into to fix? I appreciate any info. I really like the ergonomics of the Berettas (I don't own a 92 yet, but I held one in a gun shop and it felt like it was married to my hand), but this is really disillusioning me as far as their QC.
Edit: If anyone responds, I just realized they're probably gonna ask, so the ammo in question is Remington, flat nose (target), full metal jacket.