The unclued Across lights, when correctly paired with the unclued Down ones, are of a kind, verifiable in Brewer.
 

Across

4 Deer and setters disturbed fire-arm supports (11, hyphened)
11 Bits of lava surround unfortunate one (7)
13 Valentino edited modern work (9, hyphened)
14 Wader’s support (5)
19 African Moslems’ bad sinuses (7)
21 Isle’s black pick-up (4)
23 Young tree — one that’s alright round heather (7)
24 It’s almost flat panic, initially! (4)
30 Medley from a couple of little girls (7)
32 In full – on the run? (7, two words)
34 Bulrush from gutless turcophile (4)
35 Sideways request one City rejected (7)
37 Constituent at start of the...