Good to see it's fixed up. Lookin' good.
Have you considered sending your story and pics to EK? It still looks to me that those cracks were initiated during machining. It takes sharp tooling and patience to machine acrylic and they know it. Best case they'll send you a new cover and you'll have a saleable block.
It may help to also send them full res pictures. For me they show up quite small unless logged in, which they probably won't do.