Hi,
we using SolidWorks to draw the wing; and yes, I think that it’s a problem of the merging script because I’ve the same error merging your reference wing. The front and superior plane are in the good position. but right no ! I’ve tried to change several distance from it but nothing; the wing goes back but not further; probably there is a problem with the merge of right plane.
Thanks, hope in solutions
Vincenzo