Here's the fix: go back to your build's page, and hit "refresh", even if the rack looks right. Then go to the "Show" dropdown menu and select "Screenshot". You're likely to see the version above. If you do, hit "refresh" on your browser, and if the old layout persists, quit "Screenshot", refresh the layout page again, then re-select "Screenshot". Once these two images are the same, then go back to your post, delete the present link, save the edit, then edit it AGAIN with the "new" build page URL. Once you save that, then the proper screenshot will be linked to the Forum thread. But the important part is to make sure the screenshot matches the build page, as the Forum's images come from the screenshot and NOT the build itself.