Once again I've got the answer without fully understanding the clue!
9A: "Found old pet light clothes"(7). Answer 'located'.
So, 'located' means 'found'; there's a 'cat' in there which could be the pet, and of the letters that are left, I can find an 'o', an 'l' and a 'd', so I've got 'old', leaving me with an 'e' with which to make "light clothes"???