Just haven't got on the right wavelength this morning!
13a Heard copper so long (3,3) S?E/?O?
16a Mabel's beaten after spades and hearts shuffle (7) S?A???E
20a Lustful Romeo having been bedded was exhausted(3,3) R??/???
17d The could reproduce bats (7) ????E??
21d Gag about small person? Censor it ??T??