Well after a year of carrying and shooting only a SP101 I decided to get a glock. Well I was able to get a G27 from here on BS. My first time shooting it I was getting good groups but low and to the left. Well the transition from revolver to auto wasn't without a few hiccups so I went home and researched all my books, here on BS etc.. and after a couple of dry fires with the PROPER grip and trigger control im happy and very RELIEVED to say I went to Barney's yesterday with 160+ rounds and drilled holes pretty much any where on the target I wanted. I am very happy with it. But....I have 4 magazines for it, I bought 2 new 11rd mags for it and it came with 2 9rds. I had 4 failure to feeds on the last round with the same magazine. All the rest have shot great. I inspected and found that the follower of the "suspect" mag is different from the rest. in the picture the left mag is the odd one out, the right two are the new ones. Any Input?