Which of the Nightforce scopes have adjustable parallax (ie. side focus knob)? I read somewhere that the NXS 2.5-10x32 may not and 2.5-10x24 definitely does not have parallax adjustment (side focus). So does the 2.5-10x32 have side focus? If not which models have this function because all of the pictures I see show all of the NXS scopes with 3 knobs but the nightforce website makes no mention of side focus on any of their models.