A suggestion for the time being would be to copy the post you want to edit/add to and paste it into notepad. Make your changes, then re-post it in a new post. Just let a mod/admin know to delete the old one and there you go.
You are still in total control of your post, changes, etc. The mod/admin is doing nothing but a simple delete.
A bonus to that is that it automatically bumps the thread for viewing by those who need information, and gains more viewing.
Is that a workable solution for the time being? In fact, it would make the information viewable on a regular basis and more often?
KD