Jake, as you are changing mast rake according to the conditions, do you also change your spreader angle and diamond tension?

I am asking becouse we dont bother to change mast rake (perhaps we should), but we do change our spreader angle and tension if crew weight changes and we want to be really competitive.
Also, I was wondering if you feel that mast rake really is that important to change? Can you actually feel a change in power while beating with less rake?