I've held my feet in front of me along the outsides of the forks and found that to be the major source of buffeting with the roadster screen. I would bet the summer screen is the same. I tried lowers with the roadster screen myself but still didn't eliminate the buffeting like the Givi screen does. They lessened it to a good extent, but it was still there. I'm sure this is due to the lack of adjustment angles you have available with the Triumph screen.
Thunderpipes, 135 mains, TBS needles, snorkel & AI removed
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