I can sell you the parts if you need them.
I think the best place to split it, if you want to try and print it, is right at the middle bearing. The spot where the 2.5″ bolt goes through. It makes sense to me now, with very little coffee in me. That way the bolt would keep pressure on the seam and I don’t think there are many other forces acting on the part right there. If it doesn’t work I can get you a price.