Hi all. Did my first commute today, 1 deg C at home and not much more most of the way - so visor was fogged instantly if I closed it. Not much fun for a Noob. I've got an AGV GP-Tech (only helmet that would fit my Predator shaped skull) and there are these 2 little black knobs on the outside of the visor, one each side near the pivot. I assumed they were for tear-offs, which I would only use commuting if I wanted to look like a complete tosser. But they aren't for Pinlock are they? Oh & Pinlock's website doesn't list the AGV GP-tech. Help anyone? AL.