Hi Piffleworthy,
I had the same thoughts initially, especially when I'd solved all the clues but had about 5 or 6 of them ticked correct rather than 3.
However, on looking at it again, I think there are only 3 clues where the wordplay is 100% correct.
1a for example, looked ok but now I see that "troubled" should precede "Lupercal" rather than "man".
16a is another where all the wordplay elements are present but the definition is in the middle of the clue rather than the beginning or end.
21a has perfect wordplay but the number of words in the answer is wrong.
25d another where the answer is clearly shown but lacks the obvious indicator.
I may be wrong, of course, but I'm confident that Stick Insect has managed to keep the 100% correct clues to 3 as per the preamble.
But I'd be interested to hear what your good self and others think.