Why isn't the shader array actually at 0,0,0, and why does it offset in Z+ X+ ? This is a bit confusing, and weird guessing it's dimensions or measuring if I can to centre it. Is this by design?
I guess this could be useful for some very specifics placement based on corners, but then you've just got one corner axis available, so doesn't seem complete.
Update: Oh, fun... ? You can't actually translate it. Rows just disappear on X- side.