Bothersome wind buffeting around the rider's head/shoulder area is a known issue with some of the Harley touring model bikes, and I was experiencing it on my RK with the windshield in place.
One of the potential fixes I found while doing some research is a set of fork-mounted wind deflectors, often referred to as "fangs".
Found a H-D OEM set NIB on eBay for ~$30 less than MSRP and placed the order.
Gotta admit I was pretty skeptical, but man was I wrong... These things work and work well. HUGE reduction in helmet buffeting up to ~70mph and a substantial decrease above that. Took me all of about 15 minutes to install. Wasn't sure I'd like how they looked, but they're not terrible... I can deal with it for the benefits provided.
A few shots...
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