Here are the pictures: https://imgur.com/a/USL7XxR
These were installed a few years ago and ALL of them have this problem where the handle doesn't fully close. So we close it as much as possible.
There is a lot of resistance with the rubber lining. If I close the window not as tightly, then the handle will fully shut and click.
The window in the picture above doesn't look like anything is wrong, at least to me. So I can't understand why it's not closing properly and why there is so much resistance with the rubber. I can't force it to close fully or it looks like I'm gonna break it!
Any help would be great.
I'm going to buy some WD40 tomorrow and spray that and see if it makes any difference.