Hi 
I absolutely love this theme, it’s so clean and exactly what I had been searching for. Got my site set up very quickly and I much appreciate your documentation and great support throughout this forum. My current issue is regarding the mosaic tiled galleries which I have several of; they are set to display full size images most of which are 850x567. Some images are showing up as teensy little thumbnails which are too small. Is this something I should be asking of the Jetpack support team? I hoped maybe I could tell it to never display smaller than a certain size within those mosaic galleries.
Here is one of my galleries where you can see it: suzettebarnett.com/chicago-in-black-white
Second issue is that when clicking on an image in a gallery it does not open in Lightbox. Is this possible?
Much thanks!