1: Try to deny yod is a vowel intrinsically (7)
4: Again dices pith of herb as stuffing for baguettes (7)
8: Bridge players under low deer (5)
9: Ran into a section of the time-table (3)
10: Endless taping-over is unsuitable (5)
11: Bugler to stand playing in fields of war (13)
13: Fork prong holds passion fruit (9)
15: Hold up congressman ... (5)
17: A revolutionary New England state or an Indian state (5)
18: Formulate a question in mathematical terms (9)
20: National official is here, carrying identification, after challenge overwhelms local center (4-9)
23: Maverick starting to buck in wind (5)
24: Therefore, finish off this bit of work (3)
25: Send back stopwatch, as an example (5)
26: The night before, take a break--it's a BIG mountain (7)
27: Candy, Rod, Gump all confused (7)