I just received a Primary Arms illuminated 5x prism scope for my Ruger SR 762. It has 5 illumination settings in both red and green for the Chevron tip, but the rest of the scope is etched glass and not illuminated. When looking in bright light situations it looks great in every setting. In low light, indoors at night or with the lens cap on for testing, everything looks good on brightness levels 1, 2, 3. But on the 2 brightest settings I see random dots of illumination on the left side of the scope reticle. Is this normal and why there are different brightness settings or is this a defect I should ask to have fixed?