I noticed that my AR-15 rear sight aperture is a lot on the left side, even when it says it is centered. When using the O-2 large hole aperture, it is kind of annoying because when I do the Army nose weld to the charging handle, the side of the cutout in the carry handle obstructs a little bit of my sight picture. Is this normal? Or maybe the put the sight in too far left because the front sight base might be bent left? I'm confused.