I have a Vortex Viper PST 4-16x50. I recently got an ACD and through the process of mounting it it appears that my reticle is canted .2 degrees to the left in relation to the elevation turret cap. I found this by using 2 digital levels along the rifle receiver and the turret cap in conjunction with a plum bob at 50 yards. So my question is: How common is this degree of cant in lower end tactical scopes? How much will it effect my shooting? Vortex said they would replace my scope, but Im worried I will just get sent back another one with the same or worse cant if this is just what their tolerances are.