9 across. take the first steps in a short climb- e.g.indecisive. (5)??g??.
5 down(5) A member of the aristocracy could be Lebon. (5)s????. I have simon but other clue answers must be wrong as it doesn't fit.
11 across. It's the merest change of distances for olympic runners. (6)?n?r?s.
7 down sin is terrific at the beginning-then it's ominous. (8)s?????e? I have sinister, but again som other answers don't fit.
12 down. A tailles mutt upset kids stomach (3)??m. probably tum, but until I get the correct answers to the above I'll know for sure.