Having just checked the solution to Listener 4656 and discovered I had ONE incorrect letter in a light where I had a question mark against the clue (D'OH!), I really need to seek assistance parsing 12ac, 39ac and 35dn.
I have replaced the two adjacent entries and highlighted five of the six related items, so it seems a fair bet that I have the solution to one (or maybe two!) of the above clues not quite correct.
Any help would be gratefully received.
(Hats off to Wan for a cleverly-constructed puzzle in which, for once in a long while, some of the clues were much trickier than the endgame — at least for this solver. I assume the puzzle's title refers to words one to four derived from the extra letters from clues.)