I hate to ask such a dumb question, but I just bought a used NXS with zero stops from someone on this board. Sent the check today and got to thinking. I understand how a zero stop works for elevation, but it says zero stops, so I assume there is one for windage. However, you have to be able to dial windage in either direction. So a zero stop doesn't make much sense. Is there a zero stop on the windage, and if so, how does it work?