Strange drag force

[MegaFlop10]

I built a plane, but it never takes off because of this unbalanced drag force and I have no idea where it came from. I took the plane apart and all but I can't find why it's so unbalanced.

Starting off:

Inside: (Where the drag force is)

Exploding:

It works when the debug menu has it on "drag spheres" instead of cubes.

Edited May 8, 2015 by MegaFlop10

[Kosmo-not]

Try putting the rear landing gear close to the center of mass. It looks like it's currently forward of most of the control surfaces on the wing, so pulling back on the stick is actually pushing the plane into the ground. You can also try putting canards on it near the nose.

[MegaFlop10]

this is not the problem

it goes sideways only