I believe the GT-Air 2 has this cracked open notch in the main visor.Both would be better if they had a visor notch that was about 3mm above full closed. Shoei has known about that complaint for years, they don't appear to be in a hurry to fix it. I guess if you want a helmet that can vent via the visor, you just buy another brand.
thanks for all the input guys
i think it will be between a x14 or 1200
just cannot ride a helmet that is not snell