Don't usually finish, but I'm so close. 9 down Corps going across live rails (5) I have SO???
If 15 across Type of butter cut but recipe's missing (4) ?HE? is GHEE, then second last letter is 'E'.
Similarly, if 17 across Judge in total confusion, miles away repeatedly (6) AS?ES? is ASSESS 9 down ends with 'S'.
I just can't get it all to fit. Thanks.