I can see what I'm aiming at with
5A5AHe's feline funny: potent hum? (pardon the pun) (3)
[---] , but it's clumsy stuff and I should have scrapped it. "Murder your darlings," as they say. Otherwise, hmm, I like
2D2DCalamity without end, without end... (3)
[---] but
I'm a sucker for the "repetitions that must be parsed differently" gag. To my mind this is mostly rather workmanlike but unobjectionable cluing; but that's also hard for me to judge accurately. Why not give it a shot, and let me know.