Hi all, After being shot briefly yesterday by my Pastor (who loved the gun, by the way), my S40-A1 has started to make a strange rattling noise when I tilt the gun up or down. It also feels as if something is sliding around in the slide. I immediately unloaded the gun and took it apart to look for a problem but nothing obvious jumped out at me. I put the gun back together and tilted up and then down, there was no rattle and nothing slid around. The rattling and sliding only happen when the gun is loaded. I'm positive the gun is assembled correctly as I only field strip it. I'm using the 10rd S40 magazines. Any ideas on what could be causing this? The gun shot perfectly for my Pastor (and no, I didn't shoot it. Long story.). Thanks! Ps. Chambered or un-chambered doesn't matter, if the mag is in the gun it rattles, unless the mag is unloaded. Weird.