Moved to Site Help/Feedback.
Also, when adding a signature, after typing in what you want in the signature block, scroll down to "Preferences" and select "yes" in the option "Always attach my signature".
When I added my sig pic, the picture did not attach to posts I had made prior to adding this sig pic. I don't know if the sig text is the same way, but as long as you add your text in the sig block and select the correct option (as stated above), your tank info will be a part of the posts you make from now on.