Buffeting giving me a headache - any tips out there

[Motor1]

Hi Guys,

Standard screen is causing lots of buffeting at 120km up.  Busy trying different things eg. up or down, washers at top to move top out a bit etc.

Have any of you okes got tips please?  Don't want to spend big bucks  :biggrin:

 

[Kykdaar]

 

[Chrisl]

 

[Winston]