1: Metallic element forming excellent electrical connection (4,5)
6: Reptile eventually climbing a hill (5)
8: May voyage a spell (7)
9: Original State-in-Origin seat? (5)
11: Yogi's enthralled by boundless flings and deviant behavior (9)
14: Coal remaining at the end of a month (5)
15: Race cars Dr. Silver steers without trace of effort (9)
17: Grant loud colour (3)
19: Red Square leaders picking up wild stories with electronic gear (9)
20: Practise using public transport (5)
21: Defective gas meters for people who take chances (9)
23: Spring water coming up natural, simple, and fresh (5)
24: Salt sees entrance taking in everyone (7)
27: Put on University of Texas ring (5)
28: Tales swirling about federal agents associated with certain divisions (9)