One week ago I sent one of my glock 34's to Glock,Smyrna for a review of the metal failure of the slide. The slide had two cracks on it. The first was on the left side of the ejection area fron top to botton right at the front radius, the other was on the right side of the ejection area in the middle it ran about half way down. Has any one else had this experience?? I have fired about 5000 rounds through the pistol. I use factory ammo Federal,Winchester and sometimes Remington no reloads.