aod v/b ?

The pictures are of a valve body from a so called rebuild that went 7000 miles before the direct drive shaft broke. I am familiar with what I call casting slag, but this looks like a crack to me. It looks worst then the picture shows. It does go in instead of out like slag usually does. Anyone agree? If I read the book correctly - the place I marked is on the 3-4 shuttle.

Your thoughts
Later
dbd

Pull the valve out of it, if the valve is wasted you will know.