I was playing around with my EXPS on my new Stag 2TL and noticed that the quadrail and upper are not aligned very well. See picture. I'd like to be able to move my EXPS when I'm not using a 3x magnifier. Is this normal to be out of alignment? Should I send it to Stag to be fixed or is this a simple fix for me to do? Thanks for any input. I'm new to the M4 realm, but I'm learning!