'78 kz 650 windshield help

All,

I apologize if this has been covered. I recently purchased a bar mount windshield 18"x22" high. Not sure what kind/brand it just had a "Tracy Wild One" sticker on it that I removed. I have tried adjusting it a little bit but my top/front portion of my head feels like I hit it against a wall after I get off. The buffeting it pretty rough. I am 5'10" and use a full face helmet.

any input is appreciated.

Couple of things you can try. One you can add a bit of a lip to the upper edge of the windshield to deflect the air up and hopefully over your head. This can be a Heat up and bend the top of the shield, add a bit of weatherstrip that has a lip, add a aftermarket lip. Lanier or something like that I think makes one, but $70 or so. Bending using a heat gun works pretty well.
Otherwise changing the mounting to lift the shield higher is another possibility.