Beaver Builder with Visualmodo Dark theme... full screen image issues!

Hi there.

I’m new here and have this issue that is really bugging me. Recently purchased Visualmodo’s Dark theme and I can’t get a full screen image with Beaver Builder. Have tried the way I used to do it, using Astra, (create row, use image as background, make it full width) but it still displays with a big white border around it.

Anyone know how I get get round this please? Visualmodo are telling me just to use WP Bakery but i really don’t have time (or any desire) to learn a new page builder; especially since I love BB and have UABB.

Thanks so much,
H