Grid 1
18a Spoken (4) -e--
16d Fickle (7) ---g-e-
(These two clues intercept at last letter of 18a & second letter of 16d)
19d Instruct (5) -e---
24aCompelling/logical(6)--o-n-
(They intercept at 4th letter of 19d & first letter of 24a)
Grid 2
16d Rise/elevation (6) -p-i-t