Re: im stuck...
I usually will try to get a hold of the respective Aircraft Maintenance Manual and use drawings as reference. You start with a top view of the wing, draw cross sections span-wise matching the airfoil shape, repeat that for the control surfaces and finally use boolean operations or whatever method your source data allows. If you have really detailed drawings you may even be able to build the wing inside out. (be prepared for a few weeks of work though).
Boolean ops work well for LE slats. TE flaps expose parts inside the wing when extended so a simple boolean operation will not be enough.
There is no easy way to build slotted flaps on airliner wings. It always is tedious work and requires good reference drawings for correct shape & animation sequence.
peter
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