I just picked up my 500 today, and I have one concern. If I hold the gun with the barrel pointed towards the ceiling, then tilt the gun so the barell is pointed towards the ground there is a moving part that you can hear fall down the tube. I stripped it a little to find it's a wooden or plastic rod of some sort, is this normal? I was also expecting the finish to be a little better on the gun, but most of the scratches are under the pump which is understandable. Also on the underside of the gun where the shells are loaded there is no metal flap that keeps dirt from getting into the action, which is one thing I kinda liked on the 870 I shot-other than that it's great.