Yeah, on my yet-to-be-uploaded-787X it just seemed to act like airbrakes, the flaps... well extra airbrakes i guess

Las mecánicas del juego no admiten estos. Los flaps son dispositivos hipersustentadores, osea que aumentan la sustentacion, de hecho asi funciona todos los alerones y timones, pero el juego toma el movimiento de estos como un giro, no como mayor sustentacion

Can someone make a VTOL wing that rotates the control surface 90 degrees for missile bay doors?

look at my plane here for help

Or just look at one of my planes a perfect example

Ya that is a weird thing I've noticed @MasterLobster

Use fuselage pieces and put separate fuselage wings inside, it will actually work, instead of only making your plane pitch down, my Super Etendard could be an example of that working if you were to just put some fuselage wings in there.

@Aviation but my flaps are working well

@Aviation you simply can't simulate it here. I guess the airliner dudes can help you. @BaconAircraft

What I have been trying to use are flaps @Alienbeef0421, and like how 747s extend flaps on landing, whenever I do that with my airliners, they just pitch down. I'll post an unlisted plane and link you it so you can see what I mean

@Aviation look at my planes. Did you actually mean slats?

@Aviation Have you tried to invert them?, I havent seen that happeniing

Yeah I've used a separate structural wing (like in my dive bomber), but it had no effect on lift, whatever. Also, when putting control surface flaps down, the plane would pitch down @Alienbeef0421

Or XML and input TRIM @Alienbeef0421

You must be using a separate wing for a flap.

For a simpler version,

Try XMLing a control surface.
Here's what you'll edit:

input=VTOL
maxDeflectionDegree=40

Note: the left wing must be inverted

What do you mean by opposite effect on lift?