Gravel crotch, aerodynamics

Anyone else noticed a small amount of dust/gravel on their seat after an hour or so of riding? The aerodynamics of the CRF seem to be flicking this dirt up and under my crotch area regularly. Definitely not there at the start of the ride, as I wipe it off every time, but weird all the same. I have the standard screen fitted and no shield fitted to the top of the fork area/front of tank.

Im sure those on here with Harleys may have a crotch issue too

No mate.

My crotch is dust free.

Yes the aerodynamics are crap/different on the AT. I rode in the wet last weekend, and my bloody crotch and jacket bottom was soaked, all from an updraft somewhere. Never happened on the GS. I have the forkshield fitted but think its snake oil. I definitely get a chilly chin with the air coming up under and inside my helmet. Not to mention how much more of a battering my feet and trouser legs are getting from the water. But its fun to ride, sounds nice and the DCT is very cool.