Answer: sticklers

AnswerCrossword Clue
STICKLERSPurists
STICKLERSPetty perfectionists
STICKLERSPerfectionists
sticklersSTICKLER, one that stickles (to argue stubbornly)
sticklersA difficult problem; a conundrum
sticklersA person who insists on a certain quality or type of behavior