I guess that I am just one of many with this problem. I got a BNIB 145 yesterday, took it to the range, shot 10 out of the first mag put the second mag in and the first shot popped the mag out and stove piped the cartridge. I got home and did an internet search for this issue and couldn't believe how many people have this problem with the millennium series. Anyway, after having to remove the Fire Control Group, I finally managed to get the mag catch out and reversed it. It seems to hold the mags a lot better in the south paw position. When I get back to the range I will find out if it fixes the "mag drop". I was hoping to find a viable fix on this forum, but it seems that most people just order new parts or send their 145 to Taurus. I think that the problem is not the parts, but the frame itself. It appeared to me that in the right hand position that the mag release stuck in place when it was in it's retracted position. Because when I pushed the smooth face on the right side to make sure that the button was all of the way out, it felt like it got hung in the plastic. And when I pushed the button to release the mag it felt like it was popping a little as though it was hung in the square slot in the frame. Now that my mag release is reversed I don't feel that popping as though it was hung when I depress the mag release. For the most part, it seems to operate smoothly, but it still just seems like a very poorly designed mag release system to me. I do not intend to mail my 145 to Taurus, I believe that I can work through this issue. I am not one for giving up my gun. Whether for repairs or whatever.