1: ...implies it hasn't changed (5,2)
2: Eccentric bad footballer (3-6)
3: Cheyenne Mountain installation produces radon mixture (5)
5: Gantry in Hilton Hotel, Mermaid Beach (5)
6: Teen unclothes poorly dressed diners (13)
7: Liberate some tennis without charge (3,4)
9: Dangerous undertaking skiers in busy S bend (5,8)
11: Upright drunk's interjection interrupts the others briefly (7)
15: Dance to old home recording (3 4)
17: Freezing - with nothing on top? (5,4)
18: In Indonesia, returning from the western part a must (7)
20: Doctor urges: 'Remove Roy's heart in operation' (7)
22: Junker left Alaskan city heading north (5)
23: Flower shop nosh about $41 (5)