Doesn't look as if there is any interest, and the original comments were there for over two years. I emailed the pm to say I was changing it.
I think from now on, instead of just adding comments and sources, I'll email the pm, tell them what I intend, wait to see if they have any objections and, if not, just go ahead. Otherwise these things just sit broken forever. If they have some reason to disagree, that's fine, we can likely sort it out