Stuck on top RH corner, must have something wrong :(
5 down, The other half that's often double?, 5 letters, D_T_ _
6 down , Completely self- obsessed, like man with Lazarus briefly portrayed in parable? ,9 letters, A-R---R-C
11 across Jumbo's superlative, if a shade funny, we're told, 6 letters,
_ _ _ _ S _.
9 across may be wrong, I have TALK-TURKEY for" Porter following close to Trappist prior to counter gossip."
My head hurts!