Would appreciate some help. 13A. Article in duplicate goes over pilot's head (6) C*N*** 15A. Paper-packer? No - it makes the hole bigger (6) *E*M*R 18A. Harbour-barge carrying less? (7) **G*T*R 23A. How the persistent cobbler applies himself until he dies (2,3,4) 21D. Printer's measures in themselves (3) E** 16D. Quite trifling discourtesy (6) ***G**. Thank you in advance