Thanks for the input, guys.
I think my 1D is correct, then, if I change the S-part: I now understand the parsing. I had the name of the fruit as the answer, which gave me an 'r' as the second letter of 9A and I had a stonking answer for that one, which was orca - you know, killer whales, take the top & tail off p-orke-r. Whatever Paul's answer is, I already like mine better :-)
If you think all the clues are OK then I guess 24D isn't (r)egret, either.