I'm new to red dot sights and bought a Bushnell TRS-25 from Optics Planet. I haven't had a chance to sight it in yet but I noticed that the front glass is mounted at an angle. The glass is recessed more at the top than it is at the bottom (tilted slightly upwards). Will it affect the accuracy of the sight? This picture on Cabela's web site shows it recessed the same amount all around: Cabela's: Bushnell® Trophy TRS-25 Red-Dot Sight Thanks.