I've come to a grinding halt with this!!! Any help would be very much appreciated.
21a) Joint acting not for a swinger's partner, perhaps (4) ?AN?
23a) Senior copper's inside full (4) S??R
25a) Rush Saint Jack ?TA?
27a) Fly with its tail trapped by shot roughly (7) ?AR?H??
33a) Not entirely genial creature from Persian legend (4) ????