I’ve got a Gen1 Terminator .357 that’s had the barrel breech Oring fall out. It’s causing the gun to blast a ton of air out the breech when firing and can’t cycle. I’ve tried to get the barrel off the gun to put the Oring back in, but can’t find any manuals online. Has anyone here done a deep tear down on a Gen1 Terminator or had the same issue? This gun is crazy fun to shoot and it sucks having it out of action!