By the way, welcome to the world of dual tube night vision, it rocks! One tip, counterweight your helmet and it will be much more comfortable. One thing I brought home from the service with me was the idea that carrying weight for no reason is silly. Thus, I am not a fan of these $100+ lead helmet weights you see for sale. We were issued PVS-15's which were heavy, so we used a dual mag pouch on the back of the helmet with two loaded glock 19 mags as a counterweight. It works perfectly for dual 14's as well, and you have weight that is actually useful for more than just being a weight. It kind of looks bulky in pictures but is really not bad.
Sorry for the overload of pictures. I just got a new computer that is actually fast enough to allow me to copy and paste links from imgur. I got a little excited and carried away. My bad!