In the end it was super simple because all I had to do was find & replace on the specific width attribute, because it was specific to all the adornments I wanted to change.
I knew where to find the stuff prior to your post, but as always your level of detail is very useful, and good for others to find later via searches.
This point has been made by I think you and others in the past, but I think it might be something that could really be shouted even more by Eastgate – Tb data isn’t a locked format. It’s rendered in good old XML, so if needs be you can go digging around in it (if you know what you’re doing), but it also means your data is accessible outside of Tb for whatever reason, be it you don’t want to use Tb anymore or something else like doing hacks that might not be available in-app. I trust putting data into formats that are readable by text editors much more than black boxes.