Question Author
I did not realy enjoy this - as I feared it is chiefly a feast of cold solving, and, IMHO, the fact that each checked letter in an answer could be one of several actually made things worse. Also, though I believe the final word to the question is the one found in the ODQ, this leaves a sour taste as there is no indication. The two nine-letter alternatives, i believe, should be ruled out because they are a part of the answer as given (being less convoluted would give too much away). I still have no answer for 13a, though I obviously have all the letters to be entered from the relevant down lights. Overall a little unsatisfactory.