I've got to say, I thoroughly enjoyed this, even though I hadn't heard of half of the 5/9s.
After the response to my post last week about a possible ambiguity I hesitate to mention this but, in 9a, it's not clear if "for the auditor" is referring to "take" or "5/9" and, to complicate the matter, the 'ambiguous' letter is unchecked.
25a - the 5/9 is clear but I just cannot see the wordplay?
Thanks to Paul for a good workout:-)