Finished, after two careful reads-through of the forum, and a few uses of CrosswordSolver.
Foi:1a
Loi: 26a
Cod: 8 an elegant anagram, or 3 for neatness
Was about to ask for a hint on parsing 26a, but somehow mowgil's(?) words "failure to understand the tricky wordplay." on it made me look again, and again, and I suddenly saw it. Clever clue. (Sorry if name spelled wrong, can't scan back mid-post to check while on phone: had Copied the quote.)