I could really use some help folks. I have a sub-9 that has all but locked up? The bolt wont hardly move. I've taken it apart and cleaned and oiled it but to no avail? It sticks so tight that the recoil spring wont even send the bolt back forward. and if the bolt is closed its all I can do to get it open? I'm stumped? Its one of the first sub-9's to be put out (014xx) and I really don't have more than maybe a couple to three boxes of ammo through it. Any ideas are greatly appreciated!!!!!