I just purchased a new Saiga 12 w/19" barrel. The first thing I noticed after getting it home was that the sights seemed to be a little off. The rear sight is tilted with the right side a little lower than the left. Then as I sight above the gas tube down the barrel, the barrel appears to be canted to the right quite a bit. I told myself that I must be imagining this. But I looked again and there is a distict alignment issue with the barrel. Is this a common thing with the Saiga 12? I am at work, but when I get home I will try to post pictures. Is it possible that this is an illusion caused by