1a; Putting one in pain. 6 letters. ??ting.
1d: Tone down replacement festoon- nothing less. 6 letters. ??f??? Could it be offset??
4a: Not quite dispose of Greek character’s first tool. 6 letters. ?h????
11a: Old model, an exhibitionist. 7 letters. ??p?t?r
22a: One in a jacket is controversial perhaps. 3/6 letters. h?t and ???a?o
25a: Dull dog removed from inside farm building. 6 letters. ???d?y