I just looked at an EAA side by side Bounty Hunter II 12 ga. NIB I ordered for my gun clubs annual auction. Problem is I can't get the barrel to fit onto the receiver. Followed all the instructions, breakdown lever all the way to the right etc. and the back of the lug seems to be hitting the notch in the receiver. Is this normal? Are they that tight? My FFL couldn't get it to go either. Just want to make sure before I send it back.