There should be a head morph in the Head actor under Morph>Miki4Morphs labeled Miki4. If you don't have a build with that then something screwy is going on with your version and you should re-download. Everything else, as far as I know is now final. It's likely the concerns you have were already addressed but you should always post up a report if you catch something as soon as you catch it (as you know). Feel free to report whatever it was you found, if Darrell's already corrected it, he'll close the bug.