Across
Perfidious crime, as air conditioning is for Jacob? (6,3)
Issue covered by arms programme (5)
Noisy sleeper leaving Pole more vexed (5)
Stroke head of grumpy old man during picnic (3,6)
Modern masters keeping books for folk in rag trade? (10)
One can initially use boomerang (4)
Giving tea and sympathy after penny dropped (7)
Desperate entrance and exit (2-2-3)
Silly people regularly unveil inventions (7)
British-American bank having bigger assets (7)
Ham producer, articulate woman of wisdom (4)
Scottish families ignoring fences — dismal experiences for lairds? (10)
Berlin building site founders touring Switzerland in torment (9)
Recollection of lame setter in US resort (5)
Think about old piece of computer equipment (5)
A tot plans to play after end of term (4-5)
Down
Intestinal problem purging insides of Estonian dramatist (5)
Crazy Gang led by small US comedian (9)
Hide problem under mat — it isn't entertaining (10)
Shaking milk container, seized by extremes of jollity (7)
Rabid dog bite requiring treatment (7)
Talks endlessly about doctor (4)
Retrospective acknowledgement: argon is noble gas (5)
Stars on the radio are irritating breed (5,4)
Rider somehow ran amok (10)
Kid rings sister with unusual problem (9)
Road rage in part of African colony (6,3)
Extremely talented mate with new business (5-2)
Bony half-cut artist in wine shops (7)
American saying proper farewell (5)
Runner runs over line, wailing (5)
Ultimately, eating rubbish made me fat (4)
Type letters or click words in the clue