Hello!! FOLKS!!! I have a very big problem that i hope you all can help me with. While disassembling my Rem. 870 ( which was a gift for me, unfortunately the last owner have not clean it for years.) after taking out the barrel, I tried taking out the bolt and the pump but they both would not budge. I press the shell release as well but it still won't come out of the action. I did how ever took the trigger off, it was kind of hard to take it off but im sure its just the gump built up in it. Is this a problem where i should take it to the gun smith? If you guys know anything please HELP!!! Thank you.