ok, let me start by saying i am very new to firearms so this may seem like a dum question. i was shooting clays with my remington 870 12ga. today and it kept jamming. every 5 rounds at least one would get stuck. i couldnt pull the for-end back. i would have to wiggle it for a while to get it to eject the shell. i'm sure its something simple (i hope) but has anyone had this problem before? also, are there any websites that tells how to take apart and clean this gun. i dont know how to take it apart. (that was hard to admit) im sure after two boxes of clays its due for a good cleaning.