No. No way of making it better so Wardy made me a new manifold and then charged me for the privilege. It looks nice and hasn't cracked in the time I've been using it. Flanges warped a little but I don't think there's any way of truly preventing that, unless it's cheap material? It's the design that's flawed. I did ask for an exact replica of my old manifold as that one worked but was given this and assured it was better. Turns out it isn't.
Thank you. Hopefully some updates to follow in the new year.