[pizzaspinate]

Hi,
Im currently trying to mesh an blended wing body in icem. I only created half of its geonetry as it is symmetric.
If I mesh it with inflation layers and hex elements I get penetrating elements on the upper and lower surface of the wing on the symmetry plane.
My question is:
How can i get rid of those elements and what causes them in first place? I dont get penetrating elements on the symmetry plane when not using inflation layers but this not really an option.

Thank you very much in advance for your help!!