Two I can't parse are:-
39 Ac:- "Architectural features
misaligned, places rear walls in" (7)
(S-F-I-S) SOFFITS would seem apt.
46 Ac:- "Companion endlessly munching
away, seeing fried food" (7)
CROUTON seems favourite.
Whilst I am mentioning these, I have
to say what an absolutely brilliant
crossword Mr. Araucaria compiled in
the Guardian. Took me hours to do but
I enjoyed every minute of it!