Finished yesterday. Some great clues, but don't get three of them.
21a: Does it yield fuel for hurricane lamps? (6) CAN(N)EL- wordplay?
23a: Being priest denied attendance (7) ES(S)ENCE- ditto.
27d: Pour the tea on afternoon rostrum? (4) Assuming BEMA(A), don't get the tea thing.
Braced for embarrassment as usual.
Still wondering about Omaha too...