First encounter with a non-word puzzle, but am getting there! Thanks for some more hints for these remaining, please!
ACROSS: 11 Wallop maker ( 10, hyphened ) : ?IC??EWE?Y - I know it's thematic, but do not know where to go from here! Help!
36 Carefully tilts, moving ring to the end ( 6, 2wrds ) : ?USTS?A ( Is my A wrong? )
42 Stop at sea ( 5, 2 wrds ) : ?NG?O
DOWN:
10 Unmixed ( 6 hyphen ) : P?RE?D
12 Skeletal part (10 hyp ) :?EM?NEBO?E
Yes, Jno - the themed bit's come up a few times, but maybe not on Matakari's posts (I think he has quite a few!)
Matakari, you're welcome. Yes, to your 12 A letters.
I'm surprised you haven't seen non-word entries in the Spectator. I'm sure we must have had some over the last decade or so.