Was mounting my new Vortex PST 6x24 on my 300 Win Mag yesterday and am concerned with the eyebox. At 6x I had to move way back (about 2" or more) on the stock to get a clear picture and then move forward to my normal shooting position from about 12x on up. Eye relief was set about 3.5 to 4 inches. Moving from 12x to 6x, it seemed I was looking thru the scope at a downward angle with dramatic shading if I moved my head a fraction of an inch. Adjusting my position back a couple of inches (eye relief now 5.5 to 6 inches) then gave a better picture. Anyone else having these issues? Have not shot the rifle yet but the glass is nice and clear at the upper ranges.