30dn is a Scottish word for "afraid" with the same letters as AFTER, but, of course, it's not entered in its correct order (the last letter moves up).
As for 27 across, I have SO-N, as I think the V of 5dn moves to the top.
I have quite a few solutions but am particularly perplexed by 15ac for which I have -SS--R, but no solution which gives me a possible word for
8dn.