Ok, so I managed to disassemble my entire rifle, which took a LOT of effort to get the gas tube out, now, the reverse seems to be true, the gas tube doesn't want to go back in place. *facepalm* it looks like the washer that's between the tube and the post is bowed a bit too much, but I'm not sure. I'm really stressed at this thing now, I haven't even gotten to fire the thing yet.