Finally got to it this morning, and found it very tough to get any traction, with an answer here, an answer there, but no momentum to finish a quadrant.
Finally got the SE, followed by most of the NE, then the other two little by little.
But I don't know the answer to 13A, which I just randomly guessed a word that fits the letters but, I fear, not the clue.
Judging from mentions of 13A in previous pages here, I suspect that a Yankee like me would not know this.