Well done, perseverance paid off by the sounds of it.
I believe although the Givi Airflow works well on many bikes, it's not meant to be that great on the 800.
I initially tried the Puig 2.0 deflector on top of the standard screen and thought it worked if the wind was coming straight towards me: any side winds made it feel like there was literally no screen in front of me. I assume the standard screen is tapered to accommodate the handlebar handguards on full lock.
So in the end I went with the somewhat expensive Powerbronze Powerblade, which effectively comes with three different sized screens covering all seasons and a sliding mechanism that offers great adjustability: up & down by about 100mm, and tilts back up to about 30mm.
Seems to work well (for me at least) but given the price only worth it if you intend to keep the bike quite a few years.
Shown with the largest 455mm tall screen.
