Mine only fogs when I look down while breathing. By down, I mean down at my gas tank or to make sure my fly is zipped. The fog is immediately gone the second I look up. I think it also happens when I look left or right in a certain position and fogs only on one side when I do that but the fog is also gone almost immediately. I use the breath guard (as mentioned, it comes standard) and the chin webbing thing (also standard). Doesn't seem to matter if I have the vents opened or not. I'm sure it would happen less with vents open... I just haven't noticed.. Also seems that it happens much less now that it's getting warmer and maybe not at all anymore... now that I think about it.
jimundascores
jimundascores