i just received my s4 flight case today. and im just wondering if its suppose to be hard to slide the laptop tier. I've seen a video someone made and he showed how smooth it is to slide up and down. mine is not like that at all. i also found a thin piece of scrap metal when i flipped it upside down. It also sounds like something else is loose in side when i shake it. Should i be worried or were they just not careful enough and forgot to remove and scrap .