Awning plastics

[Persko]

Hi,
Just a stupid question about the use of the black plastic pieces in the awning which can slide to the right and left. I can't really figure out what they are for, can anyone help? Thanks

 

[Maidment_Ocean]

Thy are there to stop awning rattling when driving.

 

[Persko]

Thy are there to stop awning rattling when driving.

OK, thanks. Would never have guessed it but it makes sense. Then I don't need to wonder about it any longer

 

[kurienp]

OK, thanks. Would never have guessed it but it makes sense. Then I don't need to wonder about it any longer

Let me put the next wonder on your mind then . Which is the correct position to minimise rattle?