OK, struggling a bit on the last two... they just don't want to fit together! 25 Across: Birds strip inside; they allow callers to have group intercourse I think that's COUPLINGS 26 Down: Seat: source...
Stuck on the last one:
6 Down: Foreign article embedded in member? Then raise it! (5)
A_A_G
(The G is assuming that 11 Across is caucussing, which I'm pretty sure it is)