Crap factory Mags..... worthless

This is the second time I have run into Skyhawk/p15 factory mags that are worthless. First time was with a p15 in 25cal and now a Diana Skyhawk in 22 cal. They simply do not line up and you end up scraping the pellet out of the mag into the chamber. Accuracy is horrible. Switching to the single shot loader or the third part mags from DDARK everything is super smooth, great accuracy, not a complaint. I do not understand how Diana can allow these guns to go out like this. I would have thought their standards were higher. These guns were purchased about a year apart. No complaint about the guns but the mags are an integral part of the purchase. Very disappointing. I hope I'm the only one but fear i'm not. 
 
If you buy China made products it's a roll of the dice whether one should expect troubles. Although I have had my fair share of completely unusable products and outright fraud on their claims as to what they are selling. I find that most often the problems with this or that in their products have been minor and a few minutes of tinkering is all that is needed to take care of defects or poor QC and render whatever it is at the very least usable. So, if it is from China and it is easy to fix that is a plus in my book if it werqs right off then you won the roll of the dice.
 
Crap factory magazines don't seem to be just a "China Gun" problem. On the other thread for DDARKO it would seem that someone seems to like his DDARKO magazines better than his factory Daystate Red Wolf magazines. And, of course, than there is FX, whose magazines were vastly improved by Sideshot. It would seem even premium brands can let the ball drop, initially, on magazine design. And, the worst magazine design in the last few years, has to go to Turkey, with the first generation Hatsan Flash magazines.