I purchased a reflex sight a few years back and never took out of box. I have a new 995TS and mounted it but could never get the illuminated reticle to go low enough to center over the gun sight at the end of the barrel. It came within maybe 1/8 inch or less. Didn't I see this as an illustration somewhere and it's possible? The sight does fit on the rail although the dial to change the settings is partially obscured but I won't be changing it. I don't want to remove all the factory hardware on top though. Is it this reflex or do I need something to give slight elevation to the rear of the sight so it would overlay the barrel sight? Thanks.