Why is it so hard to get good advice !!???

Because it's brand new - I'd leave the lash loose. The lash is what the manufacturer says, and it's set on a running temperature engine. If the cam has not been broken in then a little extra lash is not going to hurt anything, and too tight may. Set it per manufacturer cold, run the engine to break it in, then when it's hot, adjust one bank of valves to spec with it hot, then seal it up and run it again to ge the other side hot, then set that side.