Featured Image is distorted with SiteOrigin Post Carousel

Hi Anthony,

First of all, thanks for your awesome theme! I am a total beginner and still have a lot of struggles but slowly getting better.

I have recently improved my static homepage with the SiteOrigin Page Builder plug in. Everything looks good except the SiteOrigin Post Carousel. It only shows thumbnail images when a post has a featured image. Some of my posts do, and some don’t. I can of course delete one of the regular post images and make it a featured image. So far so good.

But the real bummer is that the featured images that i sized to have the same width as the single page template with landscape dimensions, appear totally distorted (squished) in the thumbnails of the Post Carousel.

Since Quark is responsive, what size should featured images be? Or what else can I do to make sure they look correct in the SiteOrigin Post Carousel thumbnails?

My page is https://batesvision.com. Click on home and scroll down to see the carousel.

Many thanks,
Claudia