Cool. Really. Feedback like yours makes it worth doing. Thanks for doing that. I hope it works out for you.
With regards to windshields and the head/helmet buffeting, we all suffer, to varying degrees, but there are many, many variables at play. Not the least of which is our own individual statures, affected by our riding positions, windshields, and especially by our own tolerances for getting our heads knocked around.
Also there is an exposure factor, which I think s cumulative, as in how much time you've spent on the slab mixing it up with those purveyors of disgustingly dirty air, the hundreds of thousands (maybe even millions?) of over the road tractors pulling trailers around our country over the interstate systems. If you seldom venture off the 2-lane (as I strive for) you don't care quite so much about the truck wash as those who live for "the open road."
As alluded to above, I'm not a fan of the "open road" interstate slab. Any road that has a semi-trailer truck on it ahead of me (in the past 1/4 hour) is not a particularly good road , IMO.
But I'm aware enough to realize we all have our own personal dealios; our own circumstances, and levels of tolerance, if you will. I wish I never had to ride in the dirty air of another truck, but I fully realize that this is not even a remote possibility unless/until I (retire, and) move out to the sticks,. (definitely in my long range plans), and disconnect from the rest of "modern society" (much of which I have little approval for, but that may be too political or philosophical for this audience)
In the meantime, I'll continue to share my observations in the hope that it is of even a small value to some of my FJR friends and brothers. I'd just hope that you would do the same.
Cheers