Well, what I ended up doing was cutting a piece of .070" diameter neoprene "O"-ring stock and putting it in between the lip and outer seal (the gap is in molded in there) of the vertical bar seal and gluing it in from top to bottom. You can't see it either. What this did was expand the gaps so now when the wind wing is closed it is tight up against the entire channel seal. For an extra added bonus I took the liberty of putting black RTV along the seal edges and in the corners thus filling any and all voids that the rubber had innitially. This seemed to do the trick! There is the inherent noise that is normal with these trucks but no more damn wind!!