That was a couple of hours well spent, fixing up the PESOS from Instagram to here, via Bibliogram. Of course, it shouldn't have taken nearly that long, but I had to go slowly. And I haven't tested it from the cron job yet, only locally.
Still puzzled by why some photo posts in Known go through to micro.blog with an image and others don’t. Almost all are PESOS from Instagram. I thought I had an explanation, but it doesn’t hold up.