Thanks, Prospero.
I’m a little confused about 15A. I don’t think pipe’s synonym has to be criminal, but does the word for school actually form the gerund answer too?
2D. I’m not the person to ask about this, as I play pétanque, not bowls!
But I was swayed by the idea of the technical B-word , although it does seem that the clue is general knowledge, not cryptic. If 2D ends in E, then the across words are a little obscure (not that obscurity seems to worry Kite).
I always feel that a good cryptic crossword should be one that may be difficult but, when one has arrived at the answer, one should know it’s correct.
Alas …