We've decided to update XKit. It's harder than it looks. We're not in contact with the original XKit Guy, nor do we have access to xkit.info. We currently operate at this blog and on GitHub.
I've had editable reblogs double the caption a few times when i clicked reblog before xkit fully loaded. if you wait a few seconds for everything to load properly it should be fine
Thanks for the information! I’m answering this publicly in case it helps out anyone else.