"I am afraid that I didn't understood your question about the up/down elevat"

Sorry! maybe just too early morning here when my brain couldnt form the question right.[:-]

Just wonder with such a LEX, probably you need very narrow travels for both elevators up and down movement. Just like F18, we dont need large elev travel to pitch around due to the similiar LEX.

Hope this make some sense to u!

B regards