I've gone through the new Free Tools a couple of times, saw the HTTP Header Check and noticed it only returns the status code for the requested location, but what I really needed was the full server headers for the URL I was requesting to make sure the special headers I set were present.
Then I noticed the old Server Header Check that provides the full headers is still available in the control panel. I was thinking the control panel version might be a cool addition to the tools already present for those who need more details than only the status code of the headers returned for a URL.