Ok you can call me paranoid, crazy, over observative etc.. but I got back from shooting and after looking over my XD40 I notice if I tilt the gun to the side a bit I can look at the side of it in the center of the gun, right in between the disassembly and slide release levers, i can see right through the slide and frame.. I checked out my buddys beretta and couldnt do this, almost as if the slide is bent upward in the center.. didnt seem to affect the shooting at all but is this normal?