Fabia II wind deflecters

Hi, recently purchased some brand new genuine Fabia II wind deflectors from a Skoda spares dealer on eBay.

Before fitting them today I checked some YouTube vids so I knew what to do.

After fitting them they were loose on the doors and the Windows were fouling the deflecters. I noticed on the YouTube vids that they were using clips to tighten them up on the door frame and stop them from flapping and fouling the window.

I checked the boxes and no clips.

Just wondering if people on here have fitted them and did you need clips to snug then up?

Thanks.