I Prize Cryptic Crossword No 811
10 Across, Brings to mind those joining the Engineers? (9) R?M???E?S
16 Across, Provide backing for some secret activity (5) ??T?R
6 Down, Fabulous bird upset his rum with furthest tip of wing (7) S???R?H
12 Across, Religious leader revolutionary,cut down while carrying book (5) R???E
12 Across has been answered as RABBI but it does not fit with the answer I have for 3 Down,Complain over wood,also including thick vegetation and fruit, which I have answered as BEEFSTEAK TOMATO which puts the E in steak where the I should be? any help please.
Many thanks in advance.