Using 2011 theme. Found all pics were being downsized to 584 wide. Found
Added child functions.php
$content_width = 900;
(My content area is about 800px. I added a scrollgallery 900px which was using the 584 size before)
Then noticed all my tiled galleries were random. Found this
Looks like my issue but fix didn't work. All files in tiles have url ending
only last char after 'C' changes
Removed $content_width and found it was no longer cut off. But some tiles show larger than 100% of the pic.