Not enjoying this one - too esoteric. Stuck on last three in NE corner:
7D Wrong 'un gets tortured now and then (6). I've got -N---E. Is it an anagram of ungets?
12A Become registered company in US once name changed to Lambert. (5) I have E----
Lastly, 26D/8A The definitive K9 18 (8). C-E--A--. I assume it's another weird cocktail!