As usual I have all the required elements except, annoyingly, one letter. This is the 2nd letter of 33a and the 3rd letter of 26d. I can make no sense of either of the clues:-
33a - 'Tack ring to slip back cutting mount up'
26d - 'Saw writer rearing simpleton, perhaps, having taken a drop of medicine? Quite the reverse.
Can anyone put me out of my misery please?