Originally Posted by 6x16inside
Yes, from inside cab out.
No rain, yes wind from north.
Opening was not plugged well previously, no.
I had a chance to give a second look at the #2 photo. On second glance it looks like that may be a air scoop in the picture. It looks like the hole is for an outside air intake. Try to move the scoop and see if it will move back and cover the hole. Or maybe the hole was to large and the scoop only covers half of the hole.