The clue has one or two extra words or the wordplay has an extra letter.
10 Mascot, possibly, chasing darn flipping dog (6)
13. Rabbi spun and wove lined fabric (using rule for the first line) (7)
19. Catches Conservative peer in old Sierra (4)
22. Rabbie’s dish, twice shortened with lard, is lean (7)
Thanks, Hankir. I liked the way that changing one entry also provided the inspiration for the poem - simple, but clever.
We all fare better with different setters, so no puzzle will ever be ideal for everyone!